論文

査読有り
2015年10月

The rostral prefrontal cortex underlies individual differences in working memory capacity: An approach from the hierarchical model of the cognitive control

CORTEX
  • Takehiro Minamoto
  • ,
  • Ken Yaoi
  • ,
  • Mariko Osaka
  • ,
  • Naoyuki Osaka

71
開始ページ
277
終了ページ
290
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.cortex.2015.07.025
出版者・発行元
ELSEVIER MASSON

Neuroimaging and behavioral evidence has suggested that the lateral prefrontal cortex is involved in individual differences in working memory capacity (WMC). However, few studies have localized the neural structures that differentiate high and low WMC individuals, considering the functional architecture of the prefrontal cortex. The present study aimed to identify a frontal region that underlies individual differences from the perspective of the hierarchical architecture of the frontal cortex. By manipulating an episodic factor of cognitive control (control in selecting an appropriate task set according to a temporal context) and using a parametric modulation analysis, we found that both highand low- WMC individuals have similar activation patterns in the premotor cortex (BA6, 8), caudal prefrontal cortex (BA44, 45), and frontopolar cortex (BA10, 11), but differed in the rostral part of the prefrontal cortex (BA46/47); high WMC individuals showed greater activation in the higher episodic control condition, whereas low WMC individuals showed reduced activation when episodic control was required. Similar patterns of activation were found in the right inferior parietal and middle/inferior temporal cortices. These results indicate that the rostral prefrontal cortex, which supports episodic cognitive control, possibly by sending a weighting signal toward the inferior parietal and middle/inferior temporal cortices that modulate saliency and sensory processing, underlies individual differences in WMC. Episodic control account, which considers the organization of the prefrontal cortex, fits well with previous findings of individual differences in WMC. (C) 2015 Elsevier Ltd. All rights reserved.

Web of Science ® 被引用回数 : 9

リンク情報
DOI
https://doi.org/10.1016/j.cortex.2015.07.025
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/26280275
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000362131300025&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/j.cortex.2015.07.025
  • ISSN : 0010-9452
  • eISSN : 1973-8102
  • PubMed ID : 26280275
  • Web of Science ID : WOS:000362131300025

エクスポート
BibTeX RIS