Quantitative characterization of functional anatomical contributions to cognitive control under uncertainty.
Quantitative characterization of functional anatomical contributions to cognitive control under uncertainty.
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DOI:
10.1162/jocn_a_00554
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发表时间:
2014-07
影响因子:
3.2
通讯作者:
Hof PR
中科院分区:
文献类型:
--
作者:
Fan J;Van Dam NT;Gu X;Liu X;Wang H;Tang CY;Hof PR
While much evidence indicates that reaction time increases as a function of computational load in many cognitive tasks, quantification of changes in neural activity related to increasing demand of cognitive control has rarely been attempted. In this functional magnetic resonance imaging study, we used a majority function task to quantify the effect of computational load on brain activation, reflecting the mental processes instantiated by cognitive control under conditions of uncertainty. We found that the activation of the fronto-parieto-cingulate (FPC) system as well as the deactivation of the anticorrelated default mode network varied parametrically as a function of information entropy, estimated with an information theoretic model. The current findings suggest that activity changes in the dynamic networks of the brain (especially the FPC system) track with information entropy or uncertainty, rather than only conflict or other commonly proposed targets of cognitive control.
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影响因子:
2.6
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Cohen, A;Shoup, R
通讯作者:
Shoup, R
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