Updated on 2021/06/22

写真b

 
HIDAKA Souta
 
*Items subject to periodic update by Rikkyo University (The rest are reprinted from information registered on researchmap.)
Affiliation*
College of Contemporary Psychology Department of Psychology
Graduate School of Contemporary Psychology Field of Study: Psychology
Graduate School of Contemporary Psychology Field of Study: Psychology
Title*
Professor
Degree
Doctor (Philosophy) ( Tohoku University )
Research Theme*
  • 実験心理学的手法を中心に,知覚・認知心理学を主要な研究テーマとする。特に、視覚・聴覚・触覚情報処理とそれらの相互作用に着目して、心理物理学的な手法をもとに感覚・知覚システムがもつ機能と特性について検討を行っている。また、感性印象の評価や、脳機能測定法を用いた実験も行っている。ヒトに備わっている、生態学的妥当性のある脳内情報処理メカニズムの解明をめざしている。

  • Research Interests
  • Experimetal psychology

  • multimodal peception

  • Perceputal psychology

  • Campus Career*
    • 4 2019 - Present 
      College of Contemporary Psychology   Department of Psychology   Professor
    • 4 2019 - Present 
      Graduate School of Contemporary Psychology   Field of Study: Psychology   Professor
    • 4 2019 - Present 
      Graduate School of Contemporary Psychology   Field of Study: Psychology   Professor
    • 4 2012 - 3 2019 
      College of Contemporary Psychology   Department of Psychology   Associate Professor
    • 4 2010 - 3 2012 
      College of Contemporary Psychology   Department of Psychology   Assistant Professor
     

    Research Areas

    • Humanities & Social Sciences / Experimental psychology  / 知覚心理学

    Research History

    • 4 2019 - Present 
      RIKKYO UNIVERSITY   College of Contemporary Psychology Department of Psychology   Professor

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    • 4 2018 - 3 2019 
      University of London, Birkbeck   滞在研究員

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    • 4 2012 - 3 2019 
      RIKKYO UNIVERSITY   College of Contemporary Psychology Department of Psychology   Associate Professor

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    • 4 2010 - 3 2013 
      The National Institute of Advanced Industrial Science and Technology   Associate fellow

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    • 4 2010 - 3 2012 
      RIKKYO UNIVERSITY   College of Contemporary Psychology Department of Psychology   Assistant Professor

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    Education

    • - 3 2010 
      Tohoku University   Graduate School, Division of Letters   Psychology

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      Country: Japan

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    • - 3 2005 
      Rikkyo University   Faculty of Humanities   Department of Psychology

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      Country: Japan

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    Committee Memberships

    • 10 2020 - Present 
      日本基礎心理学会   理事

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      Committee type:Academic society

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    • 10 2013 - 12 2017 
      日本基礎心理学会   幹事(編集担当)

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      Committee type:Academic society

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    • 11 2012 - 10 2016 
      日本心理学会   教育研究委委員会 委員

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      Committee type:Academic society

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    • 5 2013 - 5 2014 
      日本バーチャルリアリティ学会   VR技術者認定講習会 講師

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      Committee type:Academic society

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    Awards

    • 2012  
      日本基礎心理学会  第30回大会優秀発表賞 
       
      日髙 聡太

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    • 2011  
      日本バーチャルリアリティ学会  論文賞 
       
      日髙 聡太

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    • 3 2010  
      東北大学  総長賞 
       
      日髙 聡太

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    • 2009  
      日本基礎心理学会  第28回大会優秀発表賞 

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      Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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    • 2008  
      日本基礎心理学会  第27回大会優秀発表賞 

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      Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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    • 10 2007  
      日本認知心理学会  第5回大会優秀発表賞 

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      Award type:Award from Japanese society, conference, symposium, etc.  Country:Japan

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    Papers

    • Bodily ownership and agency sensations in a natural state Peer-reviewed

      Souta Hidaka, Kyoshiro Sasaki, Toshikazu Kawagoe, Nobuko Asai, Wataru Teramoto

      Scientific Reports11 ( 1 )   12 2021

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      Publishing type:Research paper (scientific journal)   Publisher:Springer Science and Business Media LLC  

      <title>Abstract</title>Our bodily sensation is a fundamental cue for our self-consciousness. Whereas experimental studies have uncovered characteristics of bodily sensation, these studies investigated bodily sensations through manipulating bodily sensations to be apart from one’s own body and to be assigned to external, body-like objects. In order to capture our bodily sensation as it is, this questionnaire survey study explored the characteristics of bodily sensation using a large population-based sample (<italic>N</italic> = 580, comprising 20s to 70s age groups) without experimental manipulations. We focused on the sensations of ownership, the feeling of having a body part as one’s own, and agency, the feeling of controlling a body part by oneself, in multiple body parts (the eyes, ears, hands, legs, nose, and mouth). The ownership and agency sensations were positively related to each other in each body part. Interestingly, the agency sensation of the hands and legs had a positive relationship with the ownership sensations of the other body parts. We also found the 60s age group had a unique internal configuration, assessed by the similarity of rating scores, of the body parts for each bodily sensation. Our findings revealed the existence of unique characteristics for bodily sensations in a natural state.

      DOI: 10.1038/s41598-021-87843-2

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      Other Link: http://www.nature.com/articles/s41598-021-87843-2

    • Tactile interactions in the path of tactile apparent motion. Peer-reviewed International journal

      Souta Hidaka, Luigi Tamè, Matthew R Longo

      Cognition209   104569 - 104569   31 12 2020

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      Language:English   Publishing type:Research paper (scientific journal)  

      Perceptual completion is a fundamental perceptual function serving to maintain robust perception against noise. For example, we can perceive a vivid experience of motion even for the discrete inputs across time and space (apparent motion: AM). In vision, stimuli irrelevant to AM perception are suppressed to maintain smooth AM perception along the AM trajectory where no physical inputs are applied. We investigated whether such perceptual masking induced by perceptual completion of dynamic inputs is general across sensory modalities by focusing on touch. Participants tried to detect a vibro-tactile target stimulus presented along the trajectory of AM induced by two other tactile stimuli on the forearm. In a control condition, the inducing stimuli were applied simultaneously, resulting in no motion percept. Tactile target detection was impaired with tactile AM. Our findings support the notion that the perceptual masking induced by perceptual completion mechanism of AM is a general function rather than a sensory specific effect.

      DOI: 10.1016/j.cognition.2020.104569

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    • Autistic Communication and Imagination Sub-Traits Are Related to Audiovisual Temporal Integration in the Stream-Bounce Illusion. Peer-reviewed International journal

      Ayako Yaguchi, Souta Hidaka

      Multisensory research   1 - 16   8 12 2020

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:Brill  

      Autism spectrum disorder (ASD) is characterized by atypical social communication and restricted and repetitive behaviors; such traits are continuously distributed across nonclinical and clinical populations. Recently, relationships between ASD traits and low-level multisensory processing have been investigated, because atypical sensory reactivity has been regarded as a diagnostic criterion of ASD. Studies regarding an audiovisual illusion (the double-flash illusion) reported that social communication difficulties are related to temporal aspects of audiovisual integration. This study investigated whether similar relationships exist in another audiovisual illusion (the stream-bounce effect). In this illusion, two visual objects move toward each other, coincide, and pass each other, and the presentation of a transient sound at their coincidence induces a dominant perception that they bounce away from each other. Typically developing adults were recruited to perform experimental trials involving the stream-bounce effect. We measured their ASD traits using the Autism-Spectrum Quotient. The total quotient score was not related to any behavioral measurements of the effect. In contrast, for participants with higher difficulty in communication, the greatest magnitude of the stream-bounce effect occurred when the presentation timing of the sound tended to follow the visual coincidence. Participants with higher difficulty in imagination also showed the greatest magnitude of the effect when the presentation timing of the sound preceded that of the visual coincidence. Our findings regarding the stream-bounce effect, along with previous findings regarding the double-flash illusion, suggest that atypical temporal audiovisual integration is uniquely related to ASD sub-traits, especially in social communication.

      DOI: 10.1163/22134808-bja10042

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      Other Link: https://brill.com/downloadpdf/journals/msr/aop/article-10.1163-22134808-bja10042/article-10.1163-22134808-bja10042.xml

    • Visual motion information modulates tactile roughness perception. Peer-reviewed International journal

      Yosuke Suzuishi, Souta Hidaka, Scinob Kuroki

      Scientific reports10 ( 1 ) 13929 - 13929   18 8 2020

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      Language:English   Publishing type:Research paper (scientific journal)  

      We perceive the roughness of an object through our eyes and hands. Many crossmodal studies have reported that there is no clear visuo-tactile interaction in roughness perception using static visual cues. One exception is that the visual observation of task-irrelevant hand movements, not the texture of task-relevant objects, can enhance the performance of tactile roughness discrimination. Our study investigated whether task-irrelevant visual motion without either object roughness or bodily cues can influence tactile roughness perception. Participants were asked to touch abrasive papers while moving their hand laterally and viewing moving or static sine wave gratings without being able to see their hand, and to estimate the roughness magnitude of the tactile stimuli. Moving gratings with a low spatial frequency induced smoother roughness perceptions than static visual stimuli when the visual grating moved in the direction opposite the hand movements. The effects of visual motion did not appear when the visual stimuli had a high spatial frequency or when the participants touched the tactile stimuli passively. These results indicate that simple task-irrelevant visual movement without object roughness or bodily cues can modulate tactile roughness perception with active body movements in a spatial-frequency-selective manner.

      DOI: 10.1038/s41598-020-70831-3

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    • Anisotropy in tactile time perception Peer-reviewed

      Souta Hidaka, Luigi Tamè, Antonio Zafarana, Matthew R. Longo

      Cortex128   124 - 131   7 2020

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      Publishing type:Research paper (scientific journal)   Publisher:Elsevier {BV}  

      DOI: 10.1016/j.cortex.2020.03.011

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    • Tactile distance adaptation aftereffects do not transfer to perceptual hand maps. Peer-reviewed International journal

      Souta Hidaka, Raffaele Tucciarelli, Elena Azañón, Matthew R Longo

      Acta psychologica208   103090 - 103090   30 5 2020

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      Language:English   Publishing type:Research paper (scientific journal)  

      Recent studies have demonstrated that mental representations of the hand dorsum are distorted even for healthy participants. Perceptual hand maps estimated by pointing to specific landmarks (e.g., knuckles and tips of fingers) is stretched and shrunk along the medio-lateral and the proximo-distal axes, respectively. Similarly, tactile distance perception between two touches is longer along the medio-lateral axis than the proximo-distal axis. The congruency of the two types of distortions suggests that common perceptual and neural representations may be involved in these processes. Prolonged stimulation by two simultaneous touches having a particular distance can bias subsequent perception of tactile distances (e.g., adaptation to a long distance induces shorter stimuli to be perceived even shorter). This tactile distance adaptation aftereffect has been suggested to occur based on the modulations of perceptual and neural responses at low somatosensory processing stages. The current study investigated whether tactile distance adaptation aftereffects affect also the pattern of distortions on the perceptual hand maps. Participants localized locations on the hand dorsum cued by tactile stimulations (Experiment 1) or visually presented landmarks on a hand silhouette (Experiment 2). Each trial was preceded by adaptation to either a small (2 cm) or large (4 cm) tactile distance. We found clear tactile distance aftereffects. However, no changes were observed for the distorted pattern of the perceptual hand maps following adaptation to a tactile distance. Our results showed that internal body representations involved in perceptual distortions may be distinct between tactile distance perception and the perceptual hand maps underlying position sense.

      DOI: 10.1016/j.actpsy.2020.103090

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    • Unique Relationships Between Autistic Traits and Visual, Auditory, and Tactile Sensory Thresholds in Typically Developing Adults Peer-reviewed International journal

      Ayako Yaguchi, Souta Hidaka

      Perception49 ( 4 ) 405 - 421   2 4 2020

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:{SAGE} Publications  

      DOI: 10.1177/0301006620907827

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    • Effects of spatial consistency and individual difference on touch-induced visual suppression effect. Peer-reviewed

      Hidaka S, Suzuishi Y, Ide M, Wada M

      Scientific reports8 ( 1 ) 17018   11 2018

    • Investigating the Effects of Tactile Masking and Surface Texture on the Velvet Hand Illusion Peer-reviewed

      Souta Hidaka, Yosuke Suzuishi, Norimichi Kitagawa

      Perception47 ( 10-11 ) 301006618805335 - 1070-1080   10 2018

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      DOI: 10.1177/0301006618805335

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    • Visual percepts modify iconic memory in humans. Peer-reviewed

      Sugita Y, Hidaka S, Teramoto W

      Scientific reports8 ( 1 ) 13396   6 9 2018

    • Distinct Autistic Traits Are Differentially Associated with the Width of the Multisensory Temporal Binding Window Peer-reviewed

      Ayako Yaguchi, Souta Hidaka

      Multisensory Research31 ( 6 ) 523 - 536   2018

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:Brill Academic Publishers  

      Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterized by deficits in social communication and interaction, and restricted interests and behavior patterns. These characteristics are considered as a continuous distribution in the general population. People with ASD show atypical temporal processing in multisensory integration. Regarding the flash-beep illusion, which refers to how a single flash can be illusorily perceived as multiple flashes when multiple auditory beeps are concurrently presented, some studies reported that people with ASD have a wider temporal binding window and greater integration than typically developed people
      others found the opposite or inconsistent tendencies. Here, we investigated the relationships between the manner of the flash-beep illusion and the various dimensions of ASD traits by estimating the degree of typically developed participants' ASD traits including five subscales using the Autism-Spectrum Quotient. We found that stronger ASD traits of communication and social skill were associated with a wider and narrower temporal binding window respectively. These results suggest that specific ASD traits are differently involved in the particular temporal binding processes of audiovisual integration.

      DOI: 10.1163/22134808-00002612

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    • An Investigation of the Relationships Between Autistic Traits and Crossmodal Correspondences in Typically Developing Adults Peer-reviewed

      Hidaka Souta, Yaguchi Ayako

      MULTISENSORY RESEARCH31 ( 8 ) 729 - 751   2018

    • Neural mechanisms underlying sound-induced visual motion perception: An fMRI study Peer-reviewed

      Souta Hidaka, Satomi Higuchi, Wataru Teramoto, Yoichi Sugita

      ACTA PSYCHOLOGICA178   66 - 72   7 2017

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:ELSEVIER SCIENCE BV  

      Studies of crossmodal interactions in motion perception have reported activation in several brain areas, including those related to motion processing and/or sensory association, in response to multimodal (e.g., visual and auditory) stimuli that were both in motion. Recent studies have demonstrated that sounds can trigger illusory visual apparent motion to static visual stimuli (sound-induced visual motion: SIVM): A visual stimulus blinking at a fixed location is perceived to be moving laterally when an alternating left-right sound is also present. Here, we investigated brain activity related to the perception of SIVM using a 7 T functional magnetic resonance imaging technique. Specifically, we focused on the patterns of neural activities in SIVM and visually induced visual apparent motion (VIVM). We observed shared activations in the middle occipital area (V5/hMT), which is thought to be involved in visual motion processing, for SIVM and VIVM. Moreover, as compared to VIVM, SIVM resulted in greater activation in the superior temporal area and dominant functional connectivity between the V5/hMT area and the areas related to auditory and crossmodal motion processing. These findings indicate that similar but partially different neural mechanisms could be involved in auditory-induced and visually-induced motion perception, and neural signals in auditory, visual, and, crossmodal motion processing areas closely and directly interact in the perception of SIVM.

      DOI: 10.1016/j.actpsy.2017.05.013

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    • Neural mechanisms underlying touch-induced visual perceptual suppression: An fMRI study Peer-reviewed

      Masakazu Ide, Souta Hidaka, Hanako Ikeda, Makoto Wada

      SCIENTIFIC REPORTS6   37301   11 2016

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:NATURE PUBLISHING GROUP  

      Crossmodal studies have demonstrated inhibitory as well as facilitatory neural effects in higher sensory association and primary sensory cortices. A recent human behavioral study reported touch-induced visual perceptual suppression (TIVS). Here, we introduced an experimental setting in which TIVS could occur and investigated brain activities underlying visuo-tactile interactions using a functional magnetic resonance imaging technique. While the suppressive effect of touch on vision was only found for half of the participants who could maintain their baseline performance above chance level (i.e. TIVS was not well replicated here), we focused on individual differences in the effect of touch on vision. This effect could be suppressive or enhancement, and the neuronal basis of these differences was analyzed. We found larger inhibitory responses in the anterior part of the right visual cortex (V1, V2) with higher TIVS magnitude when visuo-tactile stimuli were presented as spatially congruent. Activations in the right anterior superior temporal region, including the secondary somatosensory cortical area, were more strongly related to those in the visual cortex (V1, V2) with higher TIVS magnitude. These results indicate that inhibitory neural modulations from somatosensory to visual cortices and the resulting inhibitory neural responses in the visual cortex could be involved in TIVS.

      DOI: 10.1038/srep37301

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    • History of "History of Psychology" in Japan Peer-reviewed

      Tatsuya Sato, Hazime Mizoguchi, Ayumu Arakawa, Souta Hidaka, Miki Takasuna, Yasuo Nishikawa

      JAPANESE PSYCHOLOGICAL RESEARCH58   110 - 128   6 2016

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:WILEY-BLACKWELL  

      Only a few Japanese psychologists have been interested in the history of psychology. The historiography-or the methodology of historical description-for the history of psychology has been ignored. Moreover, chairs for professors, academic journals, academic meetings, and an archive of the history of psychology remain to be established. In this paper, the history of the "history of psychology" in Japan is explored. This academic sub-discipline has emerged only during the past few decades and a theory driven historiography covering the history of psychology was initiated in Japan only at the end of the 20th century. Activities on the history of Japanese psychology can be divided into three phases: (a) the traditional history (translations and introduction of foreign knowledge and celebration of history); (b) the transition phase (the movement towards social criticism and archival research from intra-discipline); and (c) the history based on the historiography. Lastly, recent trends in the history of psychology in Japan are examined and discussed.

      DOI: 10.1111/jpr.12120

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    • Spatiotemporal Processing in Crossmodal Interactions for Perception of the External World: A Review Peer-reviewed

      Hidaka Souta, Teramoto Wataru, Sugita Yoichi

      FRONTIERS IN INTEGRATIVE NEUROSCIENCE9   22 12 2015

    • Sound can suppress visual perception Peer-reviewed

      Souta Hidaka, Masakazu Ide

      SCIENTIFIC REPORTS5   10483   5 2015

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:NATURE PUBLISHING GROUP  

      In a single modality, the percept of an input (e.g., voices of neighbors) is often suppressed by another (e.g., the sound of a car horn nearby) due to close interactions of neural responses to these inputs. Recent studies have also suggested that close interactions of neural responses could occur even across sensory modalities, especially for audio-visual interactions. However, direct behavioral evidence regarding the audio-visual perceptual suppression effect has not been reported in a study with humans. Here, we investigated whether sound could have a suppressive effect on visual perception. We found that white noise bursts presented through headphones degraded visual orientation discrimination performance. This auditory suppression effect on visual perception frequently occurred when these inputs were presented in a spatially and temporally consistent manner. These results indicate that the perceptual suppression effect could occur across auditory and visual modalities based on close and direct neural interactions among those sensory inputs.

      DOI: 10.1038/srep10483

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    • Investigation of the Effects of Color on Judgments of Sweetness Using a Taste Adaptation Method Peer-reviewed

      Souta Hidaka, Kazumasa Shimoda

      MULTISENSORY RESEARCH27 ( 3-4 ) 189 - 205   2014

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:BRILL ACADEMIC PUBLISHERS  

      It has been reported that color can affect the judgment of taste. For example, a dark red color enhances the subjective intensity of sweetness. However, the underlying mechanisms of the effect of color on taste have not been fully investigated; in particular, it remains unclear whether the effect is based on cognitive/decisional or perceptual processes. Here, we investigated the effect of color on sweetness judgments using a taste adaptation method. A sweet solution whose color was subjectively congruent with sweetness was judged as sweeter than an uncolored sweet solution both before and after adaptation to an uncolored sweet solution. In contrast, subjective judgment of sweetness for uncolored sweet solutions did not differ between the conditions following adaptation to a colored sweet solution and following adaptation to an uncolored one. Color affected sweetness judgment when the target solution was colored, but the colored sweet solution did not modulate the magnitude of taste adaptation. Therefore, it is concluded that the effect of color on the judgment of taste would occur mainly in cognitive/decisional domains.

      DOI: 10.1163/22134808-00002455

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    • Tactile stimulation can suppress visual perception Peer-reviewed

      Masakazu Ide, Souta Hidaka

      SCIENTIFIC REPORTS3   3453   12 2013

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:NATURE PUBLISHING GROUP  

      An input (e.g., airplane takeoff sound) to a sensory modality can suppress the percept of another input (e.g., talking voices of neighbors) of the same modality. This perceptual suppression effect is evidence that neural responses to different inputs closely interact with each other in the brain. While recent studies suggest that close interactions also occur across sensory modalities, crossmodal perceptual suppression effect has not yet been reported. Here, we demonstrate that tactile stimulation can suppress the percept of visual stimuli: Visual orientation discrimination performance was degraded when a tactile vibration was applied to the observer's index finger of hands. We also demonstrated that this tactile suppression effect on visual perception occurred primarily when the tactile and visual information were spatially and temporally consistent. The current findings would indicate that neural signals could closely and directly interact with each other, sufficient to induce the perceptual suppression effect, even across sensory modalities.

      DOI: 10.1038/srep03453

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    • Temporal characteristics of the effects of visual pattern redundancy on encoding and storage processes: evidence from rapid serial visual presentation Peer-reviewed

      Junichi Takahashi, Souta Hidaka, Wataru Teramoto, Jiro Gyoba

      PSYCHOLOGICAL RESEARCH-PSYCHOLOGISCHE FORSCHUNG77 ( 6 ) 687 - 697   11 2013

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:SPRINGER HEIDELBERG  

      Pattern redundancy is a key concept for representing the amount of internal mental load (encoding efficiency) needed for pattern perception/recognition. The present study investigated how pattern redundancy influences encoding and memory processes in the visual system using a rapid serial visual presentation (RSVP) paradigm. With RSVP, it is well known that participants often fail to detect repetitions of words (repetition blindness, RB). We used this phenomenon as an index of the encoding and storage of visual patterns. In three experiments, we presented patterns with higher and lower redundancy, as defined by Garner's equivalent set size (ESS). The results showed that RB occurred more frequently for higher redundancy patterns when the temporal distance between the targets was less than 500 ms; this tendency was reversed with longer temporal distances of over 500 ms. Our results suggest that pattern redundancy modulates both the early encoding and subsequent memory processes of a representation.

      DOI: 10.1007/s00426-012-0474-4

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    • Effect of pitch-space correspondence on sound-induced visual motion perception Peer-reviewed

      Souta Hidaka, Wataru Teramoto, Mirjam Keetels, Jean Vroomen

      EXPERIMENTAL BRAIN RESEARCH231 ( 1 ) 117 - 126   11 2013

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:SPRINGER  

      The brain tends to associate specific features of stimuli across sensory modalities. The pitch of a sound is for example associated with spatial elevation such that higher-pitched sounds are felt as being "up" in space and lower-pitched sounds as being "down." Here we investigated whether changes in the pitch of sounds could be effective for visual motion perception similar to those in the location of sounds. We demonstrated that only sounds that alternate in up/down location induced illusory vertical motion of a static visual stimulus, while sounds that alternate in higher/lower pitch did not induce this illusion. The pitch of a sound did not even modulate the visual motion perception induced by sounds alternating in up/down location. Interestingly, though, sounds alternating in higher/lower pitch could become a driver for visual motion if they were paired in a previous exposure phase with vertical visual apparent motion. Thus, only after prolonged exposure, the pitch of a sound became an inducer for upper/lower visual motion. This occurred even if during exposure the pitch and location of the sounds were paired in an incongruent fashion. These findings indicate that pitch-space correspondence is not so strong to drive or modulate visual motion perception. However, associative exposure could increase the saliency of pitch-space relationships and then the pitch could induce visual motion perception by itself.

      DOI: 10.1007/s00221-013-3674-2

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    • Vision contingent auditory pitch aftereffects Peer-reviewed

      Wataru Teramoto, Maori Kobayashi, Souta Hidaka, Yoichi Sugita

      EXPERIMENTAL BRAIN RESEARCH229 ( 1 ) 97 - 102   8 2013

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:SPRINGER  

      Visual motion aftereffects can occur contingent on arbitrary sounds. Two circles, placed side by side, were alternately presented, and the onsets were accompanied by tone bursts of high and low frequencies, respectively. After a few minutes of exposure to the visual apparent motion with the tones, a circle blinking at a fixed location was perceived as a lateral motion in the same direction as the previously exposed apparent motion (Teramoto et al. in PLoS One 5:e12255, 2010). In the present study, we attempted to reverse this contingency (pitch aftereffects contingent on visual information). Results showed that after prolonged exposure to the audio-visual stimuli, the apparent visual motion systematically affected the perceived pitch of the auditory stimuli. When the leftward apparent visual motion was paired with the high-low-frequency sequence during the adaptation phase, a test tone sequence was more frequently perceived as a high-low-pitch sequence when the leftward apparent visual motion was presented and vice versa. Furthermore, the effect was specific for the exposed visual field and did not transfer to the other side, thus ruling out an explanation in terms of simple response bias. These results suggest that new audiovisual associations can be established within a short time, and visual information processing and auditory processing can mutually influence each other.

      DOI: 10.1007/s00221-013-3596-z

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    • Visual presentation of hand image modulates visuo-tactile temporal order judgment Peer-reviewed

      Masakazu Ide, Souta Hidaka

      EXPERIMENTAL BRAIN RESEARCH228 ( 1 ) 43 - 50   7 2013

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:SPRINGER  

      Perceptual systems can distinguish among a variety of inputs in the temporal domain, including even different sensory inputs. This process has been investigated mainly by using a temporal task (temporal order judgment: TOJ). For example, studies have reported estimated critical limits (just noticeable difference: JND) of the TOJ between a visual stimulus and a tactile stimulus (visuo-tactile TOJ, e.g., flashes and vibrations) fell within a certain temporal range. Recent studies have also suggested that the visual presentation of a hand image could modulate visuo-tactile integrations in the temporal domain, but these studies did not thoroughly examine such effects by using temporal tasks. Here, we investigated the effect of visual presentation of a hand image on visuo-tactile TOJ. In our experiments, a visual stimulus was presented on the index finger of a hand image and a tactile stimulus was presented on the index finger of a participant's hand. We found that the JND of visuo-tactile TOJ became larger when a forward hand image was presented than when inverted hand or arrow images were presented. However, this effect was not observed for the TOJ between an auditory stimulus and a visual stimulus. Thus, the visual presentation of a hand image whose angle corresponds to that of one's own hand could selectively degrade visuo-tactile TOJ. This finding indicates that visual hand images implicitly enhance the internal proximity between the visual and tactile stimuli and make them difficult to distinguish from each other in the temporal domain.

      DOI: 10.1007/s00221-013-3535-z

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    • Illusory motion and mislocalization of temporally offset target in apparent motion display. Peer-reviewed

      Hidaka S, Nagai M

      Frontiers in psychology4   196   19 4 2013

    • Effects of head movement and proprioceptive feedback in training of sound localization Peer-reviewed

      Akio Honda, Hiroshi Shibata, Souta Hidaka, Jiro Gyoba, Yukio Iwaya, Yôiti Suzuki

      i-Perception4 ( 4 ) 253 - 264   2013

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      Language:English   Publishing type:Research paper (scientific journal)  

      We investigated the effects of listeners' head movements and proprioceptive feedback during sound localization practice on the subsequent accuracy of sound localization performance. The effects were examined under both restricted and unrestricted head movement conditions in the practice stage. In both cases, the participants were divided into two groups: a feedback group performed a sound localization drill with accurate proprioceptive feedback
      a control group conducted it without the feedback. Results showed that (1) sound localization practice, while allowing for free head movement, led to improvement in sound localization performance and decreased actual angular errors along the horizontal plane, and that (2) proprioceptive feedback during practice decreased actual angular errors in the vertical plane. Our findings suggest that unrestricted head movement and proprioceptive feedback during sound localization training enhance perceptual motor learning by enabling listeners to use variable auditory cues and proprioceptive information. © 2013 Honda et al.

      DOI: 10.1068/i0522

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    • Effect of second language exposure on brain activity for language processing among preschoolers Peer-reviewed

      Souta Hidaka, Hiroshi Shibata, Michiyo Kurihara, Akihiro Tanaka, Akitsugu Konno, Suguru Maruyama, Jiro Gyoba, Hiroko Hagiwara, Masatoshi Koizumi

      NEUROSCIENCE RESEARCH73 ( 1 ) 73 - 79   5 2012

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      We investigated brain activity in 3-5-year-old preschoolers as they listened to connected speech stimuli in Japanese (first language), English (second language), and Chinese (a rarely exposed, foreign language) using near-infrared spectroscopy. Unlike the younger preschoolers who had been exposed to English for almost 1 year, brain activity in the bilateral frontal regions of the older preschoolers who had been exposed to English for almost 2 years was higher for Japanese and English speech stimuli than for Chinese. This tendency seemed to be similar to that observed in adults who had learned English for some years. These results indicate that exposure to a second language affects brain activity to language stimuli among preschoolers. (c) 2012 Elsevier Ireland Ltd and the Japan Neuroscience Society. All rights reserved.

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    • Sound Frequency and Aural Selectivity in Sound-Contingent Visual Motion Aftereffect Peer-reviewed

      Maori Kobayashi, Wataru Teramoto, Souta Hidaka, Yoichi Sugita

      PLOS ONE7 ( 5 ) e36803   5 2012

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      Background: One possible strategy to evaluate whether signals in different modalities originate from a common external event or object is to form associations between inputs from different senses. This strategy would be quite effective because signals in different modalities from a common external event would then be aligned spatially and temporally. Indeed, it has been demonstrated that after adaptation to visual apparent motion paired with alternating auditory tones, the tones begin to trigger illusory motion perception to a static visual stimulus, where the perceived direction of visual lateral motion depends on the order in which the tones are replayed. The mechanisms underlying this phenomenon remain unclear. One important approach to understanding the mechanisms is to examine whether the effect has some selectivity in auditory processing. However, it has not yet been determined whether this aftereffect can be transferred across sound frequencies and between ears.
      Methodology/Principal Findings: Two circles placed side by side were presented in alternation, producing apparent motion perception, and each onset was accompanied by a tone burst of a specific and unique frequency. After exposure to this visual apparent motion with tones for a few minutes, the tones became drivers for illusory motion perception. However, the aftereffect was observed only when the adapter and test tones were presented at the same frequency and to the same ear.
      Conclusions/Significance: These findings suggest that the auditory processing underlying the establishment of novel audiovisual associations is selective, potentially but not necessarily indicating that this processing occurs at an early stage.

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    • Sound can enhance the suppression of visual target detection in apparent motion trajectory Peer-reviewed

      Souta Hidaka, Wataru Teramoto, Masayoshi Nagai

      VISION RESEARCH59   25 - 33   4 2012

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      Detection performance is impaired for a visual target presented in an apparent motion (AM) trajectory, and this AM interference weakens when orientation information is inconsistent between the target and AM stimuli. These indicate that the target is perceptually suppressed by internal object representations of AM stimuli established along the AM trajectory. Here, we showed that transient sounds presented together with AM stimuli could enhance the magnitude of AM interference. Furthermore, this auditory effect attenuated when frequencies of the sounds were inconsistent during AM. We also confirmed that the sounds wholly elevated the magnitude of AM interference irrespective of the inconsistency in orientation information between the target and AM stimuli when the saliency of the sounds was maintained. These results suggest that sounds can contribute to the robust establishment and spatiotemporal maintenance of the internal object representation of an AM stimulus. (C) 2012 Elsevier Ltd. All rights reserved.

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    • Indiscriminable sounds determine the direction of visual motion Peer-reviewed

      Maori Kobayashi, Wataru Teramoto, Souta Hidaka, Yoichi Sugita

      SCIENTIFIC REPORTS2   365   4 2012

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      On cross-modal interactions, top-down controls such as attention and explicit identification of cross-modal inputs were assumed to play crucial roles for the optimization. Here we show the establishment of cross-modal associations without such top-down controls. The onsets of two circles producing apparent motion perception were accompanied by indiscriminable sounds consisting of six identical and one unique sound frequencies. After adaptation to the visual apparent motion with the sounds, the sounds acquired a driving effect for illusory visual apparent motion perception. Moreover, the pure tones with each unique frequency of the sounds acquired the same effect after the adaptation, indicating that the difference in the indiscriminable sounds was implicitly coded. We further confrimed that the aftereffect didnot transfer between eyes. These results suggest that the brain establishes new neural representations between sound frequency and visual motion without clear identification of the specific relationship between cross-modal stimuli in early perceptual processing stages.

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    • Sounds can alter the perceived direction of a moving visual object Peer-reviewed

      Wataru Teramoto, Souta Hidaka, Yoichi Sugita, Shuichi Sakamoto, Jiro Gyoba, Yukio Iwaya, Yoiti Suzuki

      JOURNAL OF VISION12 ( 3 )   2012

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      Auditory temporal or semantic information often modulates visual motion events. However, the effects of auditory spatial information on visual motion perception were reported to be absent or of smaller size at perceptual level. This could be caused by a superiority of vision over hearing in reliability of motion information. Here, we manipulated the retinal eccentricity of visual motion and challenged the previous findings. Visual apparent motion stimuli were presented in conjunction with a sound delivered alternately from two horizontally or vertically aligned loudspeakers; the direction of visual apparent motion was always perpendicular to the direction in which the sound alternated. We found that the perceived direction of visual motion could be consistent with the direction in which the sound alternated or lay between this direction and that of actual visual motion. The deviation of the perceived direction of motion from the actual direction was more likely to occur at larger retinal eccentricities. These findings suggest that the auditory and visual modalities can mutually influence one another in motion processing so that the brain obtains the best estimates of external events.

      DOI: 10.1167/12.3.11

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    • Sound-contingent visual motion aftereffect Peer-reviewed

      Souta Hidaka, Wataru Teramoto, Maori Kobayashi, Yoichi Sugita

      BMC NEUROSCIENCE12   44   5 2011

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      Background: After a prolonged exposure to a paired presentation of different types of signals (e. g., color and motion), one of the signals (color) becomes a driver for the other signal (motion). This phenomenon, which is known as contingent motion aftereffect, indicates that the brain can establish new neural representations even in the adult&apos;s brain. However, contingent motion aftereffect has been reported only in visual or auditory domain. Here, we demonstrate that a visual motion aftereffect can be contingent on a specific sound.
      Results: Dynamic random dots moving in an alternating right or left direction were presented to the participants. Each direction of motion was accompanied by an auditory tone of a unique and specific frequency. After a 3-minutes exposure, the tones began to exert marked influence on the visual motion perception, and the percentage of dots required to trigger motion perception systematically changed depending on the tones. Furthermore, this effect lasted for at least 2 days.
      Conclusions: These results indicate that a new neural representation can be rapidly established between auditory and visual modalities.

      DOI: 10.1186/1471-2202-12-44

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    • Auditory Motion Information Drives Visual Motion Perception Peer-reviewed

      Souta Hidaka, Wataru Teramoto, Yoichi Sugita, Yuko Manaka, Shuichi Sakamoto, Yoiti Suzuki

      PLOS ONE6 ( 3 ) e17499   3 2011

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      Background: Vision provides the most salient information with regard to the stimulus motion. However, it has recently been demonstrated that static visual stimuli are perceived as moving laterally by alternating left-right sound sources. The underlying mechanism of this phenomenon remains unclear; it has not yet been determined whether auditory motion signals, rather than auditory positional signals, can directly contribute to visual motion perception.
      Methodology/Principal Findings: Static visual flashes were presented at retinal locations outside the fovea together with a lateral auditory motion provided by a virtual stereo noise source smoothly shifting in the horizontal plane. The flash appeared to move by means of the auditory motion when the spatiotemporal position of the flashes was in the middle of the auditory motion trajectory. Furthermore, the lateral auditory motion altered visual motion perception in a global motion display where different localized motion signals of multiple visual stimuli were combined to produce a coherent visual motion perception.
      Conclusions/Significance: These findings suggest there exist direct interactions between auditory and visual motion signals, and that there might be common neural substrates for auditory and visual motion processing.

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    • Inhibition of target detection in apparent motion trajectory Peer-reviewed

      Souta Hidaka, Masayoshi Nagai, Allison B. Sekuler, Patrick J. Bennett, Jiro Gyoba

      JOURNAL OF VISION11 ( 10 )   2011

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      Letter discrimination performance is degraded when a letter is presented within an apparent motion (AM) trajectory of a spot. This finding suggests that the internal representation of AM stimuli can perceptually interact with other stimuli. In this study, we demonstrated that AM interference could also occur for pattern detection. We found that target (Gabor patch) detection performance was degraded within an AM trajectory. Further, this AM interference weakened when the differences in orientation between the AM stimuli and target became greater. We also revealed that AM interference occurred for the target with spatiotemporally intermediate orientations of the inducers that changed their orientation during AM. In contrast, the differences in phase among the stimuli did not affect the occurrence of AM interference. These findings suggest that AM stimuli and their internal representations affect lower visual processes involved in detecting a pattern in the AM trajectory and that the internal object representation of an AM stimulus selectively reflects and maintains the stimulus attribute.

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    • Auditory temporal cues can modulate visual representational momentum Peer-reviewed

      Wataru Teramoto, Souta Hidaka, Jiro Gyoba, Yoiti Suzuki

      ATTENTION PERCEPTION & PSYCHOPHYSICS72 ( 8 ) 2215 - 2226   11 2010

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      In representational momentum (RM), the final position of a moving target is mislocalized in the direction of motion. Here, the effect of a concurrent sound on visual RM was demonstrated. A visual stimulus moved horizontally and disappeared at unpredictable positions. A complex tone without any motion cues was presented continuously from the beginning of the visual motion. As compared with a silent condition, the RM magnitude increased when the sound lasted longer than and decreased when it did not last as long as the visual motion. However, the RM was unchanged when a brief complex tone was presented before or after the target disappeared (Experiment 2) or when the onset of the long-lasting sound was not synchronized with that of the visual motion (Experiments 3 and 4). These findings suggest that visual motion representation can be modulated by a sound if the visual motion information is firmly associated with the auditory information.

      DOI: 10.3738/APP.72.8.2215

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    • Auditory temporal cues can modulate visual representational momentum Peer-reviewed

      Wataru Teramoto, Souta Hidaka, Jiro Gyoba, Yoiti Suzuki

      ATTENTION PERCEPTION & PSYCHOPHYSICS72 ( 8 ) 2215 - 2226   11 2010

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:SPRINGER  

      In representational momentum (RM), the final position of a moving target is mislocalized in the direction of motion. Here, the effect of a concurrent sound on visual RM was demonstrated. A visual stimulus moved horizontally and disappeared at unpredictable positions. A complex tone without any motion cues was presented continuously from the beginning of the visual motion. As compared with a silent condition, the RM magnitude increased when the sound lasted longer than and decreased when it did not last as long as the visual motion. However, the RM was unchanged when a brief complex tone was presented before or after the target disappeared (Experiment 2) or when the onset of the long-lasting sound was not synchronized with that of the visual motion (Experiments 3 and 4). These findings suggest that visual motion representation can be modulated by a sound if the visual motion information is firmly associated with the auditory information.

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    • Spatio-temporal characteristics responsible for high "Vraisemblance" Peer-reviewed

      Transactions of the Virtual Reality Society of Japan印刷中   10 2010

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      DOI: 10.18974/tvrsj.15.3_483

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    • Sound can prolong the visible persistence of moving visual objects Peer-reviewed

      Souta Hidaka, Wataru Teramoto, Jiro Gyoba, Yoiti Suzuki

      VISION RESEARCH50 ( 20 ) 2093 - 2099   9 2010

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:PERGAMON-ELSEVIER SCIENCE LTD  

      An abrupt change in a visual attribute (size) of apparently moving visual stimuli extends the time the changed stimuli is visible even after its physical termination (visible persistence). In this study, we show that elongation of visible persistence is enhanced by an abrupt change in an attribute (frequency) of the sounds presented along with the size-changed apparently moving visual stimuli. This auditory effect disappears when sounds are not associated with the visual stimuli. These results suggest that auditory attribute change can contribute to the establishment of a new object representation and that object-level audio-visual interactions can occur in motion perception. (C) 2010 Elsevier Ltd. All rights reserved.

      DOI: 10.1016/j.visres.2010.07.021

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    • Visual motion perception induced by sounds in vertical plane Peer-reviewed

      Wataru Teramoto, Yuko Manaka, Souta Hidaka, Yoichi Sugita, Ryota Miyauchi, Shuichi Sakamoto, Jiro Gyoba, Yukio Iwaya, Yoiti Suzuki

      NEUROSCIENCE LETTERS479 ( 3 ) 221 - 225   8 2010

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      The alternation of sounds in the left and right ears induces motion perception of a static visual stimulus (SIVM: Sound-Induced Visual Motion). In this case, binaural cues were of considerable benefit in perceiving locations and movements of the sounds. The present study investigated how a spectral cue - another important cue for sound localization and motion perception - contributed to the SIVM. In experiments, two alternating sound sources aligned in the vertical plane were presented, synchronized with a static visual stimulus. We found that the proportion of the SIVM and the magnitude of the perceived movements of the static visual stimulus increased with an increase of retinal eccentricity (1.875-30 degrees), indicating the influence of the spectral cue on the SIVM. These findings suggest that the SIVM can be generalized to the whole two dimensional audio-visual space, and strongly imply that there are common neural substrates for auditory and visual motion perception in the brain. (C) 2010 Elsevier Ireland Ltd. All rights reserved.

      DOI: 10.1016/j.neulet.2010.05.065

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    • Sounds Move a Static Visual Object Peer-reviewed

      Wataru Teramoto, Souta Hidaka, Yoichi Sugita

      PLOS ONE5 ( 8 ) e12255   8 2010

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      Background: Vision provides the most salient information with regard to stimulus motion, but audition can also provide important cues that affect visual motion perception. Here, we show that sounds containing no motion or positional cues can induce illusory visual motion perception for static visual objects.
      Methodology/Principal Findings: Two circles placed side by side were presented in alternation producing apparent motion perception and each onset was accompanied by a tone burst of a specific and unique frequency. After exposure to this visual apparent motion with tones for a few minutes, the tones became drivers for illusory motion perception. When the flash onset was synchronized to tones of alternating frequencies, a circle blinking at a fixed location was perceived as lateral motion in the same direction as the previously exposed apparent motion. Furthermore, the effect lasted at least for a few days. The effect was well observed at the retinal position that was previously exposed to apparent motion with tone bursts.
      Conclusions/Significance: The present results indicate that strong association between sound sequence and visual motion is easily formed within a short period and that, after forming the association, sounds are able to trigger visual motion perception for a static visual object.

      DOI: 10.1371/journal.pone.0012255

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    • What is "sense of presence"?: a non-researcher's understanding of sense of presence Peer-reviewed

      Transactions of the Virtual Reality Society of Japan15   7 - 16   3 2010

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      DOI: 10.18974/tvrsj.15.1_7

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    • Alternation of Sound Location Induces Visual Motion Perception of a Static Object Peer-reviewed

      Souta Hidaka, Yuko Manaka, Wataru Teramoto, Yoichi Sugita, Ryota Miyauchi, Jiro Gyoba, Yoiti Suzuki, Yukio Iwaya

      PLOS ONE4 ( 12 ) e8188   12 2009

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      Background: Audition provides important cues with regard to stimulus motion although vision may provide the most salient information. It has been reported that a sound of fixed intensity tends to be judged as decreasing in intensity after adaptation to looming visual stimuli or as increasing in intensity after adaptation to receding visual stimuli. This audiovisual interaction in motion aftereffects indicates that there are multimodal contributions to motion perception at early levels of sensory processing. However, there has been no report that sounds can induce the perception of visual motion.
      Methodology/Principal Findings: A visual stimulus blinking at a fixed location was perceived to be moving laterally when the flash onset was synchronized to an alternating left-right sound source. This illusory visual motion was strengthened with an increasing retinal eccentricity (2.5 deg to 20 deg) and occurred more frequently when the onsets of the audio and visual stimuli were synchronized.
      Conclusions/Significance: We clearly demonstrated that the alternation of sound location induces illusory visual motion when vision cannot provide accurate spatial information. The present findings strongly suggest that the neural representations of auditory and visual motion processing can bias each other, which yields the best estimates of external events in a complementary manner.

      DOI: 10.1371/journal.pone.0008188

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    • The representation of moving 3-D objects in apparent motion perception Peer-reviewed

      Souta Hidaka, Yousuke Kawachi, Jiro Gyoba

      ATTENTION PERCEPTION & PSYCHOPHYSICS71 ( 6 ) 1294 - 1304   8 2009

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:PSYCHONOMIC SOC INC  

      In the present research, we investigated the depth information contained in the representations of apparently moving 3-D objects. By conducting three experiments, we measured the magnitude of representational momentum (RM) as an index of the consistency of an object&apos;s representation. Experiment 1A revealed that RM magnitude was greater when shaded, convex, apparently moving objects shifted to a flat circle than when they shifted to a shaded, concave, hemisphere. The difference diminished when the apparently moving objects were concave hemispheres (Experiment 1B). Using luminance-polarized circles, Experiment 2 confirmed that these results were not due to the luminance information of shading. Experiment 3 demonstrated that RM magnitude was greater when convex apparently moving objects shifted to particular blurred convex hemispheres with low-pass filtering than when they shifted to concave hemispheres. These results suggest that the internal object&apos;s representation in apparent motion contains incomplete depth information intermediate between that of 2-D and 3-D objects, particularly with regard to convexity information with low-spatial-frequency components.

      DOI: 10.3758/APP.71.6.1294

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    • Hisotry and characteristics of the classical psychological apparatus used in Tohoku University: Findings obtained from a study cpmparing the apparatus with that of Kyoto University Peer-reviewed

      History of Psychology and Psychology Studies,10/11   49 - 55   7 2009

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    • Spatiotemporally coherent motion direction perception occurs even for spatiotemporal reversal of motion sequence Peer-reviewed

      Souta Hidaka, Masayoshi Nagai, Jiro Gyoba

      JOURNAL OF VISION9 ( 13 ) 6.1 - 12   2009

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:ASSOC RESEARCH VISION OPHTHALMOLOGY INC  

      Thus far, it has been pointed out that motion representation is completed in motion trajectory, and that motion representation interferes with a single physical input at a specific time and space in the motion trajectory. However, it has not been fully investigated whether the internal motion representation could interact with multiple physical inputs across time and space in motion trajectory. Thus, the current research investigated whether spatiotemporally coherent motion perception could be established in a situation involving the spatiotemporal reversal of motion sequences. In a five-point motion display, we found that the motion direction perception of the last two stimuli containing the spatiotemporal reversal was consistent with three preceding stimuli. This failure to perceive motion direction reversal occurred when the shapes of motion trajectory (to upper or lower) were randomly changed. Moreover, we con formed that one preceding stimulus (three-point motion) was sufficient to produce the failure to perceive motion direction reversal, and the effect of the prior stimuli saturated when the preceding sequence contained two or more stimuli. These findings suggest that the flexible internal motion representation mechanisms reorganize the spatiotemporal irregularities in motion trajectory and establish spatiotemporally coherent motion perceptions.

      DOI: 10.1167/9.13.6

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    • Depth representation of moving 3-D objects in apparent-motion path Peer-reviewed

      Souta Hidaka, Yousuke Kawachi, Jiro Gyoba

      PERCEPTION37 ( 5 ) 688 - 703   2008

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      Language:English   Publishing type:Research paper (scientific journal)   Publisher:PION LTD  

      Apparent motion is perceived when two objects are presented alternately at different positions. The internal representations of apparently moving objects are formed in an apparent-motion path which lacks physical inputs. We investigated the depth information contained in the representation of 3-D moving objects in an apparent-motion path. We examined how probe objects-briefly placed in the motion path-affected the perceived smoothness of apparent motion. The probe objects comprised 3-D objects which were defined by being shaded or by disparity (convex/concave) or 2-D (flat) objects, while the moving objects were convex/concave objects. We found that flat probe objects induced a significantly smoother motion perception than concave probe objects only in the case of the convex moving objects. However, convex probe objects did not lead to smoother motion as the flat objects did, although the convex probe objects contained the same depth information for the moving objects. Moreover, the difference between probe objects was reduced when the moving objects were concave. These counterintuitive results were consistent in conditions when both depth cues were used. The results suggest that internal representations contain incomplete depth information that is intermediate between that of 2-D and 3-D objects.

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    • Speed and consistency of sound-color association in a colored-hearing test Peer-reviewed

      Hidaka S, Shigeta R, Kawachi Y, Sakuta Y, Gyoba J

      Tohoku Psychologica Folia66   68 - 74   2007

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    • Crossmodal perceptual masking effect

      Souta Hidaka, Masakazu Ide

      INTERNATIONAL JOURNAL OF PSYCHOLOGY51   69 - 70   7 2016

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      Language:English   Publishing type:Research paper, summary (international conference)   Publisher:ROUTLEDGE JOURNALS, TAYLOR & FRANCIS LTD  

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    • Effects of image resolutions and image contents on subjective impressions of moving images

        114 ( 347 ) 1 - 6   1 12 2014

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    • Effects of image resolutions and image contents on subjective impressions of moving images

        38 ( 48 ) 1 - 6   12 2014

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    • Influence of surface features of visual stimuli on sound-contingent visual motion aftereffects

      W. Teramoto, S. Takebe, S. Hidaka

      PERCEPTION43 ( 1 ) 36 - 36   8 2014

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    • Visual motion contingent auditory aftereffects

      W. Teramoto, M. Kobayashi, S. Hidaka, Y. Sugita

      PERCEPTION40   186 - 186   2011

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    • Effects of the alternation of sounds on the perceived direction of visual motion

      W. Teramoto, S. Hidaka, Y. Sugita, S. Sakamoto, J. Gyoba, Y. Iwaya, Y. Suzuki

      PERCEPTION39   143 - 143   2010

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    • Intra- and inter-modal completion of a visual motion representation

      W. Teramoto, S. Hidaka, J. Gyoba, Y-I Suzuki

      PERCEPTION38   132 - 132   2009

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    • 仮現運動事態で内的に形成される運動物体表象(共著)

      日高聡太, 行場次朗

      心理学評論51   220 - 234   5 2008

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    • Dynamic auditory cues modulate visual motion processing

      W. Teramoto, S. Hidaka, J. Gyoba, Y. Suzuki

      PERCEPTION37   72 - 72   2008

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    • The Effects of Head Movement and Kinetic Feedback on Sound Localization Learning

      HONDA Akio, SHIBATA Hiroshi, HIDAKA Souta, GYOBA Jiro, IWAYA Yukio, SUZUKI Yoiti

      IEICE technical report107 ( 369 ) 49 - 54   29 11 2007

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      Language:Japanese   Publisher:The Institute of Electronics, Information and Communication Engineers  

      We investigated the effects of listener's head movement and kinetic feedback on the accuracy of sound localization. The effects were examined under the conditions that their head movement was restricted (study 1) or unrestricted (study 2) on the sound localization training. In both experiments, participants divided into two groups : training group performed the sound localization training with the kinetic feedback, while control group conducted the training with no-feedback. The results indicated that : (1) sound localization learning under active head movements increased the accuracy of sound localization ; (2) kinetic feedback facilitated the sound localization during the initial learning phase ; and (3) training with kinetic feedback dominantly decreased the rate of vertical localization errors in sound localization performance.

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    • 仮現運動物体が保持する奥行情報―表象的慣性(representational momentum)を指標として―

      日高聡太, 河地庸介, 行場次朗

      北海道心理学研究 ( 29 ) 106   31 8 2007

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    • Depth information contained in the representation of moving 3-D objects in apparent-motion perception

      S. Hidaka, Y. Kawachi, J. Gyoba

      PERCEPTION36   100 - 101   2007

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    • Investigations of depth information contained in the representation of moving 3-D objects in apparent motion perception

      Hidaka Souta, Kawachi Yousuke, Gyoba Jiro

      Proceedings of the Japanese Society for Cognitive Psychology2007 ( 0 ) 111 - 111   2007

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      Language:Japanese   Publisher:The Japanese Society for Cognitive Psychology  

      The current research investigated depth information contained in the representation of apparently moving 3-D objects. We measured the magnitude of representational momentum (RM) as index of the consistency of object's shape. Experiment 1A found that RM magnitude was higher when shaded convex moving objects shifted to a flat circle than when that shifted to a shaded concave hemisphere. This difference diminished in the case that the moving objects were the concave (Experiment 1B). Experiment 2 confirmed that these results did not stem from luminance information of shading using luminance-polarized circles. Moreover, Experiment 3 showed that RM magnitude was higher when the convex moving objects shifted to blurred convex hemispheres with low-pass filters than when that shifted to the concave hemispheres. The results suggest that internal representations contain incomplete depth information intermediate between those of 2-D and 3-D objects especially for convexity with low-spatial frequency dominance properties in apparent motion.

      DOI: 10.14875/cogpsy.2007.0.111.0

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    • (Abstracts of Presentation,The 24th Annual Meeting)

      日高 聡太, 河地 庸介, 行場 次朗

      The Japanese Journal of Psychonomic Science24 ( 2 ) 238 - 238   2006

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      Language:Japanese   Publisher:The Japanese Psychonomic Society  

      DOI: 10.14947/psychono.KJ00004347224

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    • 仮現運動経路上の物体表象が持つ奥行情報の検討(日本基礎心理学会第25回大会,大会発表要旨)

      日高 聡太, 河地 庸介, 行場 次朗

      基礎心理学研究25 ( 1 ) 129 - 129   2006

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      Language:Japanese   Publisher:日本基礎心理学会  

      DOI: 10.14947/psychono.KJ00004450532

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    • Psychophysical Analyses of Internal Object Representation in the Path of Apparent Motion

      日高聡太, 河地庸介, 行場次朗

      電子情報通信学会技術研究報告105 ( 479(HIP2005 79-106) ) 115 - 120   8 12 2005

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      Language:Japanese  

      J-GLOBAL

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    Books and Other Publications

    • 音響学講座5「聴覚」

      日高聡太, 北川智利( Role: Contributor ,  第11章「感覚間相互作用」)

      コロナ社  4 2021  ( ISBN:9784339013658

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      Total pages:xiii, 309p   Language:Japanese

      CiNii Books

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    • Spatial biases in perception and cognition.

      Teramoto, W, Hidaka, S, Sugita, Y( Role: Contributor ,  Auditory bias in visual motion perception)

      Cambridge University Press  2018 

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    • 誠信心理学辞典

      日髙 聡太( Role: Contributor ,  第1章「原理・歴史第3節「19世紀後半における近代心理学の成立」)

      誠信書房  2014 

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    • 現代心理学「事例」事典

      日髙 聡太( Role: Contributor ,  第2章「感覚・知覚心理学」・第6節「神経生理学的理論」.)

      朝倉書店  2012 

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    • 心理学のポイントシリーズ・第2巻「心理学史」

      日髙 聡太( Role: Contributor ,  第8章「心理学史の方法と意義」・設問54「心理学史における資料保存の意義と方法は何か」)

      学文社  2012 

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    Teaching Experience

    •  
      現代心理学特殊演習 ( 立教大学現代心理学部心理学研究科 )

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      修士論文指導演習 ( 立教大学現代心理学部心理学研究科 )

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      心理学への招待(全学共通科目) ( 立教大学 )

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      知覚心理学特殊研究・特殊研究 ( 立教大学現代心理学部心理学研究科 )

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      心理学演習・卒業論文指導演習(ゼミ) ( 立教大学現代心理学部心理学科 )

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    •  
      心理学文献講読 ( 立教大学現代心理学部心理学科 )

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      心理学概説 ( 立教大学現代心理学部心理学科 )

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      現代心理学入門 ( 立教大学現代心理学部心理学科 )

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      統計法/心理学統計法 ( 立教大学現代心理学部心理学科,東北文化学園大学 )

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      実験調査実習/心理学実験実習 ( 立教大学現代心理学部心理学科,東北大学,東北文化学園大学 )

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      知覚心理学 ( 立教大学現代心理学部心理学科 )

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    Professional Memberships

    Research Projects

    • Lifelong sciences: Reconceptualization of development and aging in the super aging society

      Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A) 

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      11 2020 - 3 2025

      Grant number:20A101

      Authorship:Coinvestigator(s) 

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    • 生体反射を指標とした複数感覚情報の同時性に関する無意識的な知覚処理の検討

      日本学術振興会  科学研究費助成事業 基盤研究(C) 

      日高 聡太

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      4 2020 - 3 2023

      Grant number:20K03484

      Grant amount:\4290000 ( Direct Cost: \3300000 、 Indirect Cost:\990000 )

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    • 高齢者の身体モデルとその神経基盤の解明

      日本学術振興会  科学研究費助成事業 基盤研究(A) 

      寺本 渉, 日高 聡太, 白井 述, 北川 智利, 安村 明, 積山 薫, 鳴海 拓志, 金山 範明

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      4 2019 - 3 2022

      Grant number:19H00631

      Grant type:Competitive

      Grant amount:\45370000 ( Direct Cost: \34900000 、 Indirect Cost:\10470000 )

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    • 大規模定型発達群を対象とした自閉症傾向に特異的な感覚処理特性の心理物理学的検討

      日本学術振興会  科学研究費助成事業 基盤研究(C) 

      日高 聡太

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      4 2017 - 3 2020

      Grant number:17K00214

      Authorship:Principal investigator  Grant type:Competitive

      Grant amount:\4420000 ( Direct Cost: \3400000 、 Indirect Cost:\1020000 )

      平成30年度は,物体の視覚的な運動方向(左右)と音の高さの変化(高低)の関係性を学習すると,静止した視覚刺激を提示した際にも,例えば音の高さの変化が高低と提示された場合に右方向の視覚的な動きが知覚される,という視聴覚相互作用における知覚学習効果と自閉症傾向との間の関係性について67名を対象とした研究結果をとりまとめた。日本版AQ score質問紙を用いて自閉症傾向の高低を測定した。全体的な自閉症傾向に加え,5つの下位項目(社会的スキル・注意の切り替え・細部への注意・コミュニケーション・想像力)のスコアを算出した。そして,注意の切り替えが不得手,即ち注意が過度に集中するという特性と学習効果との間に正の関係性が見られた。この結果は,注意は知覚学習を下支えするという知見と一致し,また別の視聴覚相互作用における知覚学習効果を扱った他の研究グループからも同様の報告がなされた。
      さらに,視触覚相互作用において,画面上に提示された視覚物体の縞模様の傾きを判断する課題を行っている最中に手に振動が提示されると,視覚物体の見えが阻害されるという視触覚間の知覚的抑制効果と自閉症傾向との間の関係性についても55名を対称に検討した結果をとりまとめ,自閉症傾向が強い参加者ほど抑制効果が強くなることが示された。この結果は自閉症の診断を受けた方はより強い触覚や自己受容感覚を持つという知見と合致するものであった。
      また,触覚情報処理において第一人者(Prof. Matthew R. Longo教授)の研究室(Birkbeck, University of London)において在外研究を行い,今後更に自閉症傾向に特有の触覚における特異性を検討するため理解とノウハウを獲得することが出来た。

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    • Research and development of training methods for sensing of social atmosphere for individuals with developmental disorders by controlling gaze behaviors

      Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research 

      WADA Makoto, IKEDA Hanako, MRINMOY Chakrabarty, NAWA Taemi

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      4 2015 - 3 2019

      Grant number:15K12615

      Grant amount:\3640000 ( Direct Cost: \2800000 、 Indirect Cost:\840000 )

      Typically developing (TD) individuals "read" other's minds by moving their eyes and observing effectively. On the other hand, in individuals with autism spectrum disorder (ASD), it may be difficult to share information with TD individuals due to different eye movement patterns, resulting in difficulty in communication. We found that other's gaze cues can be used effectively in the ASD individuals, though they did not look at the eyes of face images with line drawings. In addition, in the latter half of the task, the gaze time to the eye areas tended to increase. Furthermore, we examined the cognitive characteristics related to "reading social atmosphere", such as perspective taking, facial recognition, and multimodal information presentations. Based on that, we investigated needs from interviews with the ASD participants, and made prototypes of the support devices.

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    • Learning mechanisms for multisensory integration and its neural basis

      Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B) 

      Teramoto Wataru

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      4 2014 - 3 2018

      Grant number:26285160

      Grant type:Competitive

      Grant amount:\16640000 ( Direct Cost: \12800000 、 Indirect Cost:\3840000 )

      The brain has to know which sensory signals originate from the same external event in order to appropriately integrate information from different sensory modalities and obtain the stable representations of the surrounding environment. While spatiotemporal consistency is one cue to do this task, a prior knowledge acquired from everyday sensory experience (i.e. associative learning) could be another important cue. Using techniques from psychophysics and neuroscience, this study demonstrated the brain mechanisms related to associative learning between visual motion and auditory tone sequence and also showed that the brain generally uses associative learning between attributes of different sensory modalities to realize efficient multisensory binding.

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    • Investigations on crossmodal perceptual masking effect

      Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B) 

      HIDAKA Souta, IDE Masakazu

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      4 2013 - 3 2016

      Grant number:25780446

      Authorship:Principal investigator  Grant type:Competitive

      Grant amount:\4030000 ( Direct Cost: \3100000 、 Indirect Cost:\930000 )

      This study revealed that tactile stimulation induced the degradation of visual perception. Sound was also found to induce the degradation of visual perception in the very similar manner with the tactile case. We also demonstrated that the paired presentation of visual and tactile inputs induced the activations in the somatosensory brain areas and the deactivations in the visual areas. These findings suggests that perceptual processes would be involved in the degradation of visual perception by another modality inputs, and the facilitatory and inhibitory neural responses and interactions could contribute to the phenomena.

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    • 脳内に生成される物体知覚表象による視覚的意識の消失現象の解明

      日本学術振興会  科学研究費補助金:研究活動スタート支援(代表者) 

      日髙 聡太

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      4 2010 - 3 2012

      Authorship:Principal investigator  Grant type:Competitive

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    • Investigations on perceptual masking effect of internal objects' representations on visual awareness

      Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Research Activity start-up 

      HIDAKA Souta, NAGAI Masayoshi, TERAMOTO Wataru, GYOBA Jiro, SEKULER Allison B., BENNETT Patrick J.

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      2010 - 2011

      Grant number:22830094

      Grant amount:\1560000 ( Direct Cost: \1200000 、 Indirect Cost:\360000 )

      The present study demonstrated that the internal representation of apparent motion(AM) stimuli could perceptually mask the visual awareness of other objects. It was found that target detection performance was degraded within an AM trajectory(AM interference). Further, this AM interference weakened when the differences in orientation between the AM stimuli and target became greater. These findings suggest that AM stimuli and their internal representations affect lower visual processes involved in detecting a pattern in the AM trajectory, and that the internal object representation of an AM stimulus selectively contains and maintains the stimulus attribute. Further, the current study showed that transient sounds presented together with AM stimuli could enhance the magnitude of AM interference. This auditory effect attenuated when frequencies of the sounds were inconsistent during AM. We also confirmed that the sounds wholly elevated the magnitude of AM interference irrespective of the inconsistency in orientation information between the target and AM stimuli. These results suggest that sounds can contribute to the robust establishment and spatiotemporal maintenance of the internal object representation of an AM stimulus.

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    • Spatiotemporal integration of multimodal sensory information

      Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research Grant-in-Aid for Specially Promoted Research 

      SUZUKI Yoiti, GYOBA Jiro, KAWASE Tetsuaki, SAKURAI Kenzo, SUGITA Yoichi, IWAYA Yukio, SAKAMOTO Shuichi, MIYAUCHI Ryota, TANAKA Akihiro, YAIRI Satoshi, OTANI Makoto, KAWACHI Yosuke, KAWABATA Hideaki, KUBODERA Toshio, KOBAYASHI Maori, HIDAKA Souta, TERAMOTO Wataru, HONDA Akio

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      2007 - 2011

      Grant number:19001004

      Grant amount:\447850000 ( Direct Cost: \344500000 、 Indirect Cost:\103350000 )

      This research project aims at precisely describing multimodal perception from the view point of spatiotemporal event marking to build up brain computation models to describe perception of high-level kansei information such as verisimilitude, presence and naturalness for multimedia information. Based on such knowledge, this project also aims at providing quantitative design guidelines for multimedia spatiotemporal information display systems. As results of this project, we have accumulated a lot of new knowledge on multimodal spatiotemporal perception and have described human perception models of high-level kansei information. Finally, we have drawn up the quantitative design guidelines for multimedia spatiotemporal information display systems.

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    • 運動軌道上で生成される情報次元数の少ない中間的物体表現に関する視覚・脳科学的検討

      日本学術振興会  科学研究費助成事業:特別研究員奨励費(代表者) 

      日髙 聡太

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      4 2007 - 3 2010

      Authorship:Principal investigator  Grant type:Competitive

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    • 運動軌道上で生成される情報次元数の少ない中間的物体表現に関する視覚・脳科学的検討

      日本学術振興会  科学研究費助成事業 特別研究員奨励費 

      日高 聡太

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      2007 - 2009

      Grant number:07J04400

      Grant amount:\2700000 ( Direct Cost: \2700000 )

      空間的に離れた物体が適切な時間間隔で交互に提示されると運動が知覚され(仮現運動),物理的入力が何ら存在しない運動軌道上に内的な物体表象が形成される。本研究では,まず仮現運動軌道上に提示されたターゲット刺激に対する感度の低下を指標に,輝度極性や方位,形といった低次の物体特徴に関して,運動物体表象は誘導刺激と同じ物体特徴を保持して内的に表現されることを明らかにした。一方,運動物体表象が保持する奥行き情報について,物体の定位位置ずれ量を指標とした検討を行ったところ,運動物体表象は,特に凸に関して2次元と3次元との間の中間的な奥行き情報を持つ情報圧縮された物体として表現され,低空間周波数成分の濾過というアルゴリズムによって内的に実現されることが明らかとなった。また,仮現運動軌道上で生じる運動方向反転に対する気づきの度合いを指標とし,運動物体表象形成過程には,局所的には一貫性のない物理入力を一貫性のある滑らかな運動知覚へと内的に変換する機能があることを示した。以上の知見から,運動物体表象の形成は脳内で機能局在的に実現されるよりむしろ,初期視覚処理,運動処理,物体認知を司る部位の間のネットワークとして実現されていると考えられた。事実,NIRS(近赤外光スペクトロスコピー)を用いた脳機能測定の予備実験では,運動処理と物体処理を司る高次の領域以外にも多くの脳活動が見られ,ネットワークの特定には,空間的側面だけではなく,時間的側面の詳細な検討が必要であると考えられた。さらに,実際には静止している映像が,動きの情報を持つ音によっていて動いて見えることも明らかとなり,運動物体表象が異なる感覚処理経路において共有されることが示唆された。以上,人が脳内で行う情報処理方略に関する知見は,情報工学あるいは臨床的に応用可能であり,現実場面への貢献も期待されると考えられる。

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