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Intracellular determination of membrane potential of trigeminal motoneurons during sleep and wakefulness

Intracellular determination of membrane potential of trigeminal motoneurons during sleep and... YOSHIO NAKAMURA Institute, Departments of Physiology Anatomy the Brain Research University of California, Los Angeles, California 90024 active was recently obtained by intracellular recording from spinal 1. A chronic cat preparation is described s in unanesthetized, undrugged in which it is possible to record intracelluanimals states of wakefulness, quiet larly from identified trigeminal (jaw closer) , active (13). s for prolonged periods of time It has been reported that at the level of throughout states of wakefulness, quiet the brain stem, the monosynaptic jaw, active . closing reflex (i.e., the masseteric reflex) 2. The of these the polysynaptic jaw-opening reflex s was found to hyperpolarize (i.e., the digastric reflex) are tonically deslightly (l-2 ) as the animal changed pressed active as compared to state fro m alert wakefu lness to qu iet . quiet or wakefulness (4-6). Conse active , camp lared to quiet quently, we were interested in determining ,- hyperpolarization of 2- 10 was the responsible underlying synaptic mechobserved’. anisms for the state-dependent variations in 3. Sustained spike activity of trigeminal somatomotor activity of brain stem jaw-closer s, which was present spinal s wake wakefulness, decreased in frequency fulness. or tended to occur in bursts when http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Neurophysiology The American Physiological Society

Intracellular determination of membrane potential of trigeminal motoneurons during sleep and wakefulness

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Publisher
The American Physiological Society
Copyright
Copyright © 1980 the American Physiological Society
ISSN
0022-3077
eISSN
1522-1598
Publisher site
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Abstract

YOSHIO NAKAMURA Institute, Departments of Physiology Anatomy the Brain Research University of California, Los Angeles, California 90024 active was recently obtained by intracellular recording from spinal 1. A chronic cat preparation is described s in unanesthetized, undrugged in which it is possible to record intracelluanimals states of wakefulness, quiet larly from identified trigeminal (jaw closer) , active (13). s for prolonged periods of time It has been reported that at the level of throughout states of wakefulness, quiet the brain stem, the monosynaptic jaw, active . closing reflex (i.e., the masseteric reflex) 2. The of these the polysynaptic jaw-opening reflex s was found to hyperpolarize (i.e., the digastric reflex) are tonically deslightly (l-2 ) as the animal changed pressed active as compared to state fro m alert wakefu lness to qu iet . quiet or wakefulness (4-6). Conse active , camp lared to quiet quently, we were interested in determining ,- hyperpolarization of 2- 10 was the responsible underlying synaptic mechobserved’. anisms for the state-dependent variations in 3. Sustained spike activity of trigeminal somatomotor activity of brain stem jaw-closer s, which was present spinal s wake wakefulness, decreased in frequency fulness. or tended to occur in bursts when

Journal

Journal of Neurophysiology – The American Physiological Society

Published: Aug 1, 1980

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