Internal brain state regulates membrane potential synchrony in barrel cortex of behaving mice

James F. A. Poulet and Carl C. H. Petersen ()
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James F. A. Poulet: Laboratory of Sensory Processing, Brain Mind Institute, Faculty of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland
Carl C. H. Petersen: Laboratory of Sensory Processing, Brain Mind Institute, Faculty of Life Sciences, École Polytechnique Fédérale de Lausanne (EPFL), CH-1015 Lausanne, Switzerland

Nature, 2008, vol. 454, issue 7206, 881-885

Abstract: Neurocomputation: degrees of cortical processing Differences in synchronized activity in cortical neurons characterize different brain states, and are thought to be fundamental mechanisms of neural computation. James Poulet and Carl Petersen now show using dual whole-cell recordings from somatosensory barrel cortex in behaving mice, that the membrane potential of nearby neurons is highly correlated during quiet wakefulness but this correlation is reduced when the mice were actively whisking — a stereotypic back-and-forth movement of the whickers used to explore the environment. This suggests that internal brain states dynamically regulate cortical membrane potential synchrony during behaviour, defining different modes of cortical processing.

Date: 2008
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DOI: 10.1038/nature07150

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