[EEG of the interstimulus intervals during habituation of auditory evoked potentials in depressive moods].
Averaging of EEG of interstimulus intervals in the process of study of habituation of auditory evoked potentials (EPs) in healthy subjects and patients with endogenous depression, revealed a rhythmic wave process (RWP) especially expressed in patients. RWP appeared and became stronger in successive averaging of 10 realizations completing each of four series of 30 clicks; often (especially in depressive patients) it was manifest in averaging of all 120 realizations with an amplitude comparable with that of main EPs components and even greater. A significant correlation was found of RWP parameters with characteristics of melancholic mood in both subgroups. It is suggested that RWP appears as a result of regular changes of EEG background during multiple stimuli repetition in connection with increased "slow" habituation and in a special manifestation of perceptive defence during depression including mechanisms of active isolation from external world.
Loginov
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VV
Leshchinskaia
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IP
Latash
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LP
D000293:Adolescent; D000328:Adult; D000339:Affect / Q000502:physiology*; D003863:Depression / Q000503:physiopathology*; D003866:Depressive Disorder / Q000503:physiopathology; D004569:Electroencephalography / Q000379:methods; D005072:Evoked Potentials, Auditory; D005260:Female; D006185:Habituation, Psychophysiologic / Q000502:physiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010507:Periodicity; D012559:Schizophrenia / Q000503:physiopathology; D013997:Time Factors
EEG mezhstimul'nykh intervalov v protsesse privykaniia slukhovykh vyzvannykh potentsialov pri depressivnykh nastroeniiakh.