論文

査読有り
2016年11月

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

SCIENTIFIC REPORTS
  • Masakazu Ide
  • ,
  • Souta Hidaka
  • ,
  • Hanako Ikeda
  • ,
  • Makoto Wada

6
6
開始ページ
37301
終了ページ
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1038/srep37301
出版者・発行元
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.

リンク情報
DOI
https://doi.org/10.1038/srep37301
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000388228200001&DestApp=WOS_CPL
URL
http://www.nature.com/articles/srep37301
ID情報
  • DOI : 10.1038/srep37301
  • ISSN : 2045-2322
  • Web of Science ID : WOS:000388228200001

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