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  • Title: [Voltammetric detection of extracellular 5-hydroxyindole compounds at the level of cell bodies and the terminals of the raphe system: variations during the wake-sleep cycle in the rat in chronic experiments].
    Author: Cespuglio R, Faradji H, Jouvet M.
    Journal: C R Seances Acad Sci III; 1983; 296(13):611-6. PubMed ID: 6193846.
    Abstract:
    In rats, chronically implanted for measurements of both voltammetric and polygraphic parameters, variations of the electrochemical signal corresponding to extracellular 5-hydroxyindole compounds (peak 3) were measured during the sleep-waking cycle. The higher amplitude of this signal is always measured during waking. It decreases during slow-wave sleep (20 to 30%) and reaches its lower value during paradoxical sleep (30 to 40%). This phenomenon has been found in all structures investigated, cerebral cortex, caudate nuclei, dorsal hippocampus, suprachiasmatic nuclei, cerebellum, nuclei raphe dorsalis, centralis, pontis and magnus.
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