2013 Fiscal Year Final Research Report
The interaction between audiovisual environment and brain: normal development and autism spectrum disorders
| Project/Area Number |
23601010
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Children studies (Studies of environment on children)
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| Research Institution | Kyushu University |
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Principal Investigator |
YAMASAKI TAKAO 九州大学, 医学(系)研究科(研究院), 特任助教 (70404069)
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| Co-Investigator(Renkei-kenkyūsha) |
KAMIO Yoko 国立精神神経医療研究センター, 部長 (00252445)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 自閉症スペクトラム / 視聴覚認知 / 事象関連電位 / 光トポグラフィー |
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| Research Abstract |
The hallmark feature of autism spectrum disorders (ASD) is impaired social interaction. It is possible that atypical sensory perception contributes to social cognition impairments in ASD. Thus, the present study was aimed to elucidate how the audiovisual abilities were functionally altered in individuals with ASD by using non-invasive neurophysiological methods such as visual evoked potentials (VEPs) and near-infrared spectroscopy (NIRS). In VEPs, we found that individuals with ASD have altered automatic visual processing for emotional faces within the lower level of the visual cortex. In NIRS, we demonstrated that a mother's voice modulated the activities of temporal voice and language areas in healthy children but not ASD children. Therefore, we conclude that these audiovisual impairments could be neural basis of the disrupted social cognition observed in individuals with ASD.
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