Electrodermal and Electro-oculographic Activity in a Hypnagogic State.

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    • Abstract:
      The present study Investigated whether or not changes in spontaneous skin potential activity (SPA) could be used to identify the tendency to fall asleep. Skin potential level (SPL) and skin potential response (SPR) on the palm and on the dorsal hand were studied in 20 male subjects during a transition period (hypnagogic date) from wake to sleep. The negativity of palmar SPL significantly decreased during this transition period. This decline In SPL started 3.5 min before stage 1 onset and terminated 1.5 min before stage 1 onset. Similar anticipatory changes were found in palmar SPR and slow eye movements, suggesting the existence of common central underlying mechanisms. The dorsal hand did not show changes. [ABSTRACT FROM AUTHOR]
    • Abstract:
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