Correlations and brain states: from electrophysiology to functional imaging

被引：68

作者：

Kohn, Adam ^{[1
]}

Zandvakili, Amin ^{[1
]}

Smith, Matthew A. ^{[2
,3
]}

机构：

[1] Albert Einstein Coll Med, Dom Purpura Dept Neurosci, Bronx, NY 10461 USA

[2] Univ Pittsburgh, Ctr Neural Basis Cognit, Pittsburgh, PA 15213 USA

[3] Univ Pittsburgh, Dept Neurosci, Pittsburgh, PA 15213 USA

来源：

CURRENT OPINION IN NEUROBIOLOGY | 2009年 / 19卷 / 04期

关键词：

PRIMARY VISUAL-CORTEX; NEURONAL SYNCHRONIZATION; BARREL CORTEX; AREA MT; FLUCTUATIONS; CONNECTIVITY; INFORMATION; MODULATION; INCREASES; ATTENTION;

D O I：

10.1016/j.conb.2009.06.007

中图分类号：

Q189 [神经科学];

学科分类号：

071006 ;

摘要：

Neural activity in cortex is correlated, an observation that has traditionally been attributed to neurons receiving input from a shared and limited presynaptic pool. Recent studies have shown that correlations are also strongly influenced by network fluctuations that operate over a range of spatial and temporal scales, extending in some cases across cortical areas. These fluctuations are sensitive to internal states and external drive, so that correlations themselves depend strongly on cognitive state and stimulus properties. Given the potential impact on population coding, this modulation of correlations may play an important role in sensory processing.

引用

页码：434 / 438

页数：5

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