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Curr Opin Neurobiol. 2015 Apr;31:133-40. doi: 10.1016/j.conb.2014.10.003. Epub 2014 Oct 22.

Brain state dependent activity in the cortex and thalamus.

Author information

1
Department of Neurobiology, Kavli Institute for Neuroscience, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, United States. Electronic address: david.mccormick@yale.edu.
2
Department of Neurobiology, Kavli Institute for Neuroscience, Yale University School of Medicine, 333 Cedar Street, New Haven, CT 06510, United States.

Abstract

Cortical and thalamocortical activity is highly state dependent, varying between patterns that are conducive to accurate sensory-motor processing, to states in which the brain is largely off-line and generating internal rhythms irrespective of the outside world. The generation of rhythmic activity occurs through the interaction of stereotyped patterns of connectivity together with intrinsic membrane and synaptic properties. One common theme in the generation of rhythms is the interaction of a positive feedback loop (e.g., recurrent excitation) with negative feedback control (e.g., inhibition, adaptation, or synaptic depression). The operation of these state-dependent activities has wide ranging effects from enhancing or blocking sensory-motor processing to the generation of pathological rhythms associated with psychiatric or neurological disorders.

PMID:
25460069
PMCID:
PMC4375098
DOI:
10.1016/j.conb.2014.10.003
[Indexed for MEDLINE]
Free PMC Article

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