Papers

Peer-reviewed
Dec, 2014

Tactile priming modulates the activation of the fronto-parietal circuit during tactile angle match and non-match processing: an fMRI study

FRONTIERS IN HUMAN NEUROSCIENCE
  • Jiajia Yang
  • ,
  • Yinghua Yu
  • ,
  • Akinori Kunita
  • ,
  • Qiang Huang
  • ,
  • Jinglong Wu
  • ,
  • Nobukatsu Sawamoto
  • ,
  • Hidenao Fukuyama

Volume
8
Number
First page
926
Last page
Language
English
Publishing type
Research paper (scientific journal)
DOI
10.3389/fnhum.2014.00926
Publisher
FRONTIERS MEDIA SA

The repetition of a stimulus task reduces the neural activity within certain cortical regions responsible for working memory (WM) processing. Although previous evidence has shown that repeated vibrotactile stimuli reduce the activation in the ventrolateral prefrontal cortex, whether the repeated tactile spatial stimuli triggered the priming effect correlated with the same cortical region remains unclear. Therefore, we used event-related functional magnetic resonance imaging (fMRI) and a delayed match-to-sample task to investigate the contributions of the priming effect to tactile spatial WM processing. Fourteen healthy volunteers were asked to encode three tactile angle stimuli during the encoding phase and one tactile angle stimulus during the recognition phase. Then, they answered whether the last angle stimulus was presented during the encoding phase. As expected, both the Match and Non-Match tasks activated a similar cerebral network. The critical new finding was decreased brain activity in the left inferior frontal gyrus (IFG), the right posterior parietal cortex (PPC) and bilateral medial frontal gym (mFG) for the match task compared to the Non-Match task. Therefore, we suggest that the tactile priming engaged repetition suppression mechanisms during tactile angle matching, and this process decreased the activation of the fronto-parietal circuit, including IFG, mFG and PPC.

Link information
DOI
https://doi.org/10.3389/fnhum.2014.00926
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/25566010
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000346236600001&DestApp=WOS_CPL
ID information
  • DOI : 10.3389/fnhum.2014.00926
  • ISSN : 1662-5161
  • Pubmed ID : 25566010
  • Web of Science ID : WOS:000346236600001

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