title: [Measurement of the excitability of reticulo-cortical and reticulo-thalamo-cortical system during different states of wakefulness and sleep in the rat: technique, results and application (author's transl)].
abstract: The measurement of excitability of reticulo-cortical and reticulo-thalamo-cortical system (RtCS) is realized in rats during the careless waking state, during slow-wave sleep and during paradoxical sleep and the ratio existing between these different levels of excitability is calculated. During the inattentive waking state, the excitability of RtCS is slightly higher than during the slow-wave sleep. During the slow-wave sleep, the excitability of RtCS is higher than during the paradoxical sleep. The calculation of the ratio and the relation existing between the three principal levels of excitability of RtCS allows to define the "constant of excitability" which can be utilized in the experimental investigations of the central nervous system. In discussion, the principal interpretations of the results are given.
mesh_terms: D000818:Animals; D002540:Cerebral Cortex / Q000502:physiology*; D004569:Electroencephalography; D008297:Male; D051381:Rats; D012154:Reticular Formation / Q000502:physiology*; D012890:Sleep / Q000502:physiology*; D013788:Thalamus / Q000502:physiology*; D014851:Wakefulness / Q000502:physiology*
vernacular_title: Réactivité du système nerveux central chez le rat. Mesure de l'excitabilité du système réticulo-cortical et réticulo-thalamo-cortical pendant différents états de veille et de sommeil chez le rat: technique, résultats et application.