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Intracellular potential of medullary reticular neurons during sleep and wakefulness |
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| Authors: | Michael H. Chase Sumio Enomoto Toshiki Murakami Yoshio Nakamura Masato Taira |
| Affiliation: | 1. Brain Research Institute, University of California, Los Angeles, California 90024 USA;2. the Department of Physiology University of California, Los Angeles, California 90024 USA;3. the Department of Anatomy, University of California, Los Angeles, California 90024 USA |
| Abstract: | Intracellular records were obtained in the chronic cat from neurons of the nucleus reticularis gigantocellularis (NGC) during naturally occurring sleep and wakefulness. When wakefulness and quiet sleep was compared with active sleep, the membrane potential level of NGC neurons gradually decreased; a depolarized membrane potential was maintained tonically and selectively throughout active sleep. These data support the concept that NGC neurons assist in the generation of somatic atonia during active sleep and suggest that this state-dependent inhibitory function may be controlled by the nucleus pontis oralis as part of the general phenomenon of reticular response reversal. |
| Keywords: | NGC nucleus reticularis gigantocellularis AS active sleep QS quiet sleep W wakefulness IPSP inhibitory postsynaptic potential EPSP excitatory postsynaptic potential |
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