Presentation 2004/11/11
The brain dynamics for Biological Motion perception : An event-related potentials study
Masahiro HIRAI, Kazuo HIRAKI,
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Abstract(in English) In this study, we clarified the neural dynamics for the biological motion (BM) perception by measuring an event-related potentials. The subjects were shown BM or scrambled motion (SM) as a control stimulus. In the SM, each point had the same velocity vector as in the BM, but the initial starting positions were randomized. The perception of both BM and SM elicited negative peaks at around 200 (N200) and 240 ms (N240). Furthermore, both negative peaks were significantly larger in the BM condition than in the SM condition over the bilateral occipitotemporal region. We speculated that component N200 reflected motion processing, and N240 reflected BM processing. Further study showed that the attentional process was also involved.
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Keyword(in English) Biological Motion / Event-related potentials / Attention / Top-down processing
Paper # PRMU2004-93,HIP2004-33
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Conference Date 2004/11/11(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
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Title (in English) The brain dynamics for Biological Motion perception : An event-related potentials study
Sub Title (in English)
Keyword(1) Biological Motion
Keyword(2) Event-related potentials
Keyword(3) Attention
Keyword(4) Top-down processing
1st Author's Name Masahiro HIRAI
1st Author's Affiliation Graduate School of Arts and Sciences, University of Tokyo()
2nd Author's Name Kazuo HIRAKI
2nd Author's Affiliation Graduate School of Arts and Sciences, University of Tokyo
Date 2004/11/11
Paper # PRMU2004-93,HIP2004-33
Volume (vol) vol.104
Number (no) 449
Page pp.pp.-
#Pages 6
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