Event-related non-specific responses (K-complexes) during sleep.

P. Rajna, P. Halász, O. Kundra, I. Pál

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

EEG responses to sensory stimuli were obtained by averaging. In averages representing the reactivity of the approx. 5 min sleep period, the fluctuation of the amplitude of the obligatory part was evaluated. The deepening of sleep was reliably indicated by the increase in amplitude while the lightening of sleep by a decrease in amplitude within stage 2. In longer sleep periods beside the above tendency a micro-fluctuation occurred as evidence of the fine fluctuations of the sleep level within the phases. The synchronization response could be followed by this method even in the deep sleep stages and the above behaviour of the amplitudes of averages remained unchanged. This shows that the synchronization response to arousal stimuli is a uniform phenomenon during the whole slow-wave sleep. Our results support the assumption that the spontaneous or evoked synchronization phenomena in sleep are the products of the dynamic balance in the sleep-arousal system. An increase of amplitude may indicate an increase in the tonus of the sleep system while its decrease an opposite process. The present observations, similarly to our earlier results, may be adapted well to the sleep model based on the phasic activation and reciprocal induction theory.

Original languageEnglish
Pages (from-to)33-40
Number of pages8
JournalActa Medica Hungarica
Volume40
Issue number1
Publication statusPublished - 1983

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Sleep
Arousal
Sleep Stages
Electroencephalography

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Event-related non-specific responses (K-complexes) during sleep. / Rajna, P.; Halász, P.; Kundra, O.; Pál, I.

In: Acta Medica Hungarica, Vol. 40, No. 1, 1983, p. 33-40.

Research output: Contribution to journalArticle

Rajna, P, Halász, P, Kundra, O & Pál, I 1983, 'Event-related non-specific responses (K-complexes) during sleep.', Acta Medica Hungarica, vol. 40, no. 1, pp. 33-40.
Rajna, P. ; Halász, P. ; Kundra, O. ; Pál, I. / Event-related non-specific responses (K-complexes) during sleep. In: Acta Medica Hungarica. 1983 ; Vol. 40, No. 1. pp. 33-40.
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