[Dynamics of unit activity of the gigantocellular tegmental field in the sleep-wakefulness cycle of rats]. 1988

L B Gvetadze, and Sh D Mandzhevidze, and T N Oniani

Computer analysis and statistical processing of the unit activity showed that the majority of neurons (65.2%) in the gigantocellular tegmental field were discharging with high frequency during active wakefulness and paradoxical sleep as compared to slow-wave sleep in unrestrained rats. 11.6% of the neurons revealed an inverse pattern of activity: they discharged more intensively during slow-wave sleep, their firing rate decreasing during active wakefulness and paradoxical sleep. Some neurons (23.2%) were found which fired intensively during active wakefulness, their firing rate decreasing both in slow-wave and paradoxical sleep. Involvement of the gigantocellular tegmental field in the neurophysiological mechanisms of phases and stages of the sleep-wakefulness cycle is discussed.

UI MeSH Term Description Entries
D008839 Microelectrodes Electrodes with an extremely small tip, used in a voltage clamp or other apparatus to stimulate or record bioelectric potentials of single cells intracellularly or extracellularly. (Dorland, 28th ed) Electrodes, Miniaturized,Electrode, Miniaturized,Microelectrode,Miniaturized Electrode,Miniaturized Electrodes
D009474 Neurons The basic cellular units of nervous tissue. Each neuron consists of a body, an axon, and dendrites. Their purpose is to receive, conduct, and transmit impulses in the NERVOUS SYSTEM. Nerve Cells,Cell, Nerve,Cells, Nerve,Nerve Cell,Neuron
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012890 Sleep A readily reversible suspension of sensorimotor interaction with the environment, usually associated with recumbency and immobility. Sleep Habits,Sleeping Habit,Sleeping Habits,Habit, Sleep,Habit, Sleeping,Habits, Sleep,Habits, Sleeping,Sleep Habit
D013681 Tegmentum Mesencephali Portion of midbrain situated under the dorsal TECTUM MESENCEPHALI. The two ventrolateral cylindrical masses or peduncles are large nerve fiber bundles providing a tract of passage between the FOREBRAIN with the HINDBRAIN. Ventral MIDBRAIN also contains three colorful structures: the GRAY MATTER (PERIAQUEDUCTAL GRAY), the black substance (SUBSTANTIA NIGRA), and the RED NUCLEUS. Accessory Oculomotor Nuclei,Annular Nucleus,Darkshevich's Nucleus,Interstitial Nucleus of Cajal,Mesencephalic Tegmentum,Mesencephalic Trigeminal Nucleus,Midbrain Tegmentum,Midbrain Trigeminal Nucleus,Nucleus Annularis,Nucleus Nervi Trochlearis,Nucleus Sagulum,Nucleus Tractus Mesencephalici Nervi Trigemini,Nucleus of Darkschewitsch,Peripeduncular Nucleus,Sagulum Nucleus,Tegmentum of Midbrain,Trochlear Nucleus,Ventral Tegmental Nucleus,Annulari, Nucleus,Annularis, Nucleus,Cajal Interstitial Nucleus,Darkschewitsch Nucleus,Darkshevich Nucleus,Darkshevichs Nucleus,Mesencephali, Tegmentum,Mesencephalic Tegmentums,Mesencephalus, Tegmentum,Midbrain Tegmentums,Nervi Trochleari, Nucleus,Nervi Trochlearis, Nucleus,Nuclei, Accessory Oculomotor,Nucleus Annulari,Nucleus Nervi Trochleari,Nucleus Sagulums,Nucleus, Annular,Nucleus, Darkshevich's,Nucleus, Mesencephalic Trigeminal,Nucleus, Midbrain Trigeminal,Nucleus, Peripeduncular,Nucleus, Sagulum,Nucleus, Trochlear,Nucleus, Ventral Tegmental,Oculomotor Nuclei, Accessory,Sagulum, Nucleus,Sagulums, Nucleus,Tegmental Nucleus, Ventral,Tegmentum Mesencephalus,Tegmentum, Mesencephalic,Tegmentum, Midbrain,Tegmentums, Mesencephalic,Tegmentums, Midbrain,Trigeminal Nucleus, Mesencephalic,Trigeminal Nucleus, Midbrain,Trochleari, Nucleus Nervi,Trochlearis, Nucleus Nervi
D014851 Wakefulness A state in which there is an enhanced potential for sensitivity and an efficient responsiveness to external stimuli. Wakefulnesses
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

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