A beta2-frequency (20–30 Hz) oscillation in nonsynaptic networks of somatosensory cortex
- 17 October 2006
- journal article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences of the United States of America
- Vol. 103 (42), 15646-15650
- https://doi.org/10.1073/pnas.0607443103
Abstract
Beta2 frequency (20-30 Hz) oscillations appear over somatosensory and motor cortices in vivo during motor preparation and can be coherent with muscle electrical activity. We describe a beta2 frequency oscillation occurring in vitro in networks of layer V pyramidal cells, the cells of origin of the corticospinal tract. This beta2 oscillation depends on gap junctional coupling, but it survives a cut through layer 4 and, hence, does not depend on apical dendritic electrogenesis. It also survives a blockade of alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptors or a blockade of GABA(A) receptors that is sufficient to suppress gamma (30-70 Hz) oscillations in superficial cortical layers. The oscillation period is determined by the M type of K+ current.This publication has 31 references indexed in Scilit:
- Excitatory Effect of GABAergic Axo-Axonic Cells in Cortical MicrocircuitsScience, 2006
- Temporal activation pattern of parietal and premotor areas related to praxis movementsClinical Neurophysiology, 2005
- Single-Column Thalamocortical Network Model Exhibiting Gamma Oscillations, Sleep Spindles, and Epileptogenic BurstsJournal of Neurophysiology, 2005
- Ion channel properties underlying axonal action potential initiation in pyramidal neuronsNature Neuroscience, 2002
- Axo-Axonal Coupling: A Novel Mechanism for Ultrafast Neuronal CommunicationNeuron, 2001
- KCNQ2 and KCNQ3 Potassium Channel Subunits: Molecular Correlates of the M-ChannelScience, 1998
- Electrical coupling underlies high-frequency oscillations in the hippocampus in vitroNature, 1998
- Coherent oscillations in monkey motor cortex and hand muscle EMG show task‐dependent modulationJournal Of Physiology-London, 1997
- Stimulus-specific neuronal oscillations in orientation columns of cat visual cortex.Proceedings of the National Academy of Sciences of the United States of America, 1989
- Effects of 4-aminopyridine on rapidly and slowly conducting axons of rat corpus callosumExperimental Neurology, 1983