Journal Article10.2174/156802611797470376
Thalamocortical oscillations: local control of EEG slow waves.
Igor Timofeev,Sylvain Chauvette +1 more
54
TL;DR: A description of the three states of vigilances is provided followed by a detailed review of major brain rhythms present in the thalamocortical system, ranging from very slow to very fast oscillations.
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Abstract: This article starts with a brief review of the thalamocortical system architecture, which is composed of the projecting thalamic nuclei, the thalamic reticular nucleus, and the neocortex. Then we provide a description of the three states of vigilances followed by a detailed review of major brain rhythms present in the thalamocortical system, ranging from very slow to very fast oscillations. We provide descriptions of known mechanisms and hypotheses for unknown mechanisms for the generation of the different rhythms. The last part offers a detailed review on sleep slow oscillation describing its properties in the thalamocortical system, proposing a mechanism of generation of active states and a description of their propagation.
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TL;DR: It is reported that delta band oscillation in spike and local field potential activity in the whisker barrel cortex of awake mice is phase locked to respiration, and LFP oscillations in the gamma frequency band are amplitude modulated in phase with the respiratory rhythm.
Thalamocortical synchronization during induction and emergence from propofol-induced unconsciousness
Francisco J. Flores,Katharine E. Hartnack,Amanda B. Fath,Seong-Eun Kim,Matthew A. Wilson,Emery N. Brown,Patrick L. Purdon +6 more
TL;DR: In vivo evidence in rats that alpha oscillations induced by the commonly used anesthetic drug propofol are synchronized between the thalamus and the medial prefrontal cortex is provided, advancing understanding of anesthesia-induced unconsciousness and altered arousal and further establish principled neurophysiological markers of these states.
170
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