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Electrophysiological properties of intralaminar thalamocortical cells discharging rhythmic (≈40 HZ) spike-bursts at ≈1000 HZ during waking and rapid eye movement sleep

Authors
Journal
Neuroscience
0306-4522
Publisher
Elsevier
Publication Date
Volume
56
Issue
1
Identifiers
DOI: 10.1016/0306-4522(93)90556-u

Abstract

Abstract Thalamocortical neurons located in the large-celled district of the cat intralaminar centrolateral nucleus were found to discharge spike-bursts with unusually high frequencies (800–1000 Hz) during spindle oscillations of the electroencephalogram. In chronically implanted animals, similar spike-bursts were also fired during wakefulness and rapid eye movement sleep, two behavioral states in which other thalamocortical neurons tonically fire single spikes. Such high-frequency spike-bursts recurred with a fast rhythm of 20–40 Hz during waking and rapid eye movement sleep. Intracellular recordings under barbiturate anesthesia showed that, during spindle oscillations, the spike-bursts of intralaminar neurons are generated by brief low-threshold spikes with a much shorter refractory phase than in other thalamocortical cells. Depolarizing pulses from the resting membrane

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