2022 Fiscal Year Final Research Report
Research on neural mechanisms of sound-induced visual motion perception
Project/Area Number |
20K12583
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Research Category |
Grant-in-Aid for Scientific Research (C)
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Allocation Type | Multi-year Fund |
Section | 一般 |
Review Section |
Basic Section 90030:Cognitive science-related
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Research Institution | Iwate Prefectural University |
Principal Investigator |
Sanada Takahisa 岩手県立大学, ソフトウェア情報学部, 准教授 (40711007)
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Project Period (FY) |
2020-04-01 – 2023-03-31
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Keywords | 多感覚統合 / 最尤推定モデル / 事象関連電位 / 視覚運動知覚 |
Outline of Final Research Achievements |
We studied Sound-induced Visual Motion Perception (SIVM) to understand its neural mechanisms. We compared the ability to discern motion direction in visual-only and audio-visual conditions, analyzing psychophysical performance and SSVEP (Steady-State Visual Evoked Potential) amplitude. Both psychophysical performance and SSVEP amplitude showed a parallel shift with auditory stimulation. To gain further insights, we used a mathematical model to analyze multisensory integration and estimate psychophysical data. The model partially captured observed trends, providing valuable understanding of SIVM mechanisms. Our research illuminates the interaction and contribution of different sensory modalities to motion perception, advancing knowledge of multisensory integration and serving as a foundation for future studies in this field.
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Free Research Field |
視覚神経科学
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Academic Significance and Societal Importance of the Research Achievements |
私たちの認知は,異なる感覚情報が統合された結果だと考えられる.異種感覚情報が一致することで,より確からしい認知が生じる反面,感覚情報に乖離があると,感覚モダリティ間の相互作用によって錯覚や特殊な知覚が生じることもある.本研究の結果から,大脳皮質視覚システムにおいて,聴覚による脳活動の変調が生じていることが示唆された.また,そのメカニズムが感覚情報の重みづけ加算によってある程度説明できることが明らかになった.これらの知見は多感覚認知の様々な現象の理解の一助になると期待される.
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