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Title: Neural mechanisms of dual-task interference and cognitive capacity limitation in the prefrontal cortex.
Authors: Watanabe, Kei
Funahashi, Shintaro  KAKEN_id
Author's alias: 船橋, 新太郎
Issue Date: 2-Mar-2014
Publisher: Nature Publishing Group
Journal title: Nature neuroscience
Abstract: Simultaneous performance of two tasks often leads to performance deficits in the component tasks. This effect, known as dual-task interference, is thought to be a proof of capacity limitation in cognition, and the lateral prefrontal cortex (LPFC) has been highlighted as its putative neural substrate. Here we recorded single-neuron activities in LPFC while monkeys performed dual tasks that required the simultaneous performance of a varying-load spatial attention task and a spatial memory task. We found that the performance of the monkeys exhibited dual-task interference, and prefrontal neuron activities showed a decreased ability to represent task-relevant information to a degree proportional to the increased demand of the concurrent counterpart task. The locus of the interference was shown to originate in the simultaneous, overloaded recruitment of the same LPFC neural population by the two tasks. These results provide direct neurophysiological evidence for, and constraints to, psychological models of dual-task interference and capacity limitation.
Description: 二つのことを同時にしようとすると、どちらも中途半端になる脳の仕組みを解明. 京都大学プレスりリース. 2014-03-03.
Rights: © 2014 Macmillan Publishers Limited.
This is not the published version. Please cite only the published version.
DOI(Published Version): 10.1038/nn.3667
PubMed ID: 24584049
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