title: [EEG aspects of waking-sleep behaviour and the chronophysiology of endogenous depressions].
abstract: 1. The resting EEG in endogenous depressions, characterized by an increase of slow alpha- and subalphacomponents and a change of spatial organization of background activity, indicates a lowered level of vigilance, If the physiological diurnal increase of the dominant alpha-frequency compensates the described slowing of alpha-rhythm, the typical daily mood fluctuation of endogenous depressions will result. 2. Changes in the resting activity occurring during arousal are probably related to the functional alteration of the EEG-sleep activity, especially to the diminishing of phasic REM-activity. 3. It is suggested that the alterations in EEG pattern during sleep and wakeful state, indicating a dissolution of slow sleep activity and a deficiency of the arousal functions, represent a regression towards an immature functioning of the vigilance regulation.
mesh_terms: D000513:Alpha Rhythm; D002940:Circadian Rhythm; D003863:Depression / Q000503:physiopathology*; D004569:Electroencephalography; D006801:Humans; D012890:Sleep / Q000502:physiology*; D014851:Wakefulness / Q000502:physiology*
vernacular_title: Elektroenzephalographische Gesichtspunkte zum Wach-Schlaf-Verhalten und zur Chronophysiologie endogener Depressionen