Occurrence of 3 c/s spike wave epileptic seizures in a dozing state; role of slight fluctuations in wakefulness

P. Koves, P. Halász, I. Pal

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Abstract

In accordance with earlier observations the occurrence of spike wave epileptic seizures, both in sleep and during waking up, is promoted by a slight decrease in wakefulness level. Finer dynamic changes in wakefulness level as a result of seizures have not yet been established. In 4 patients with 3 c/s spike wave mechanism, who often show electric seizures, the authors examined wakefulness level changes with the aid of their microhypnogram method in the vicinity of these spontaneous attacks; also the stimuli not accompanied by seizures, and the stimuli which produce attacks within 2 to 10 sec, in the first and in the superficial 2nd period of spontaneous night sleep and night sleep induced by sensory stimuli. Following the stimuli leading to attacks, in so far as these reached the superficial wakefulness levels the authors noted an increase, but a decrease in the deeper levels. After stimuli which did not lead to attacks, contrasting changes in wakefulness occurred. After both spontaneous and induced seizures, an increase in wakefulness level was observed. The attacks therefore always occurred with intensive fluctuation of wakefulness level. In agreement with this was the fact that in every case the number of attacks grew after sensory stimulation, which increases the wakefulness fluctuations. The effect of stimulus provision and attacks on the dynamics of wakefulness level fluctuation indicates that it is always followed by a contrasting setback reaction. The occurrence of spike wave paroxysms is probably promoted by dozing because the process of going to sleep, reciprocally induced by a flow in of sensory impulses extends itself over numerous fluctuations of sleep depth.

Original languageEnglish
Pages (from-to)210-219
Number of pages10
JournalIdeggyógyászati szemle
Volume32
Issue number5
Publication statusPublished - 1979

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Wakefulness
Epilepsy
Sleep
Seizures

ASJC Scopus subject areas

  • Medicine(all)

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Occurrence of 3 c/s spike wave epileptic seizures in a dozing state; role of slight fluctuations in wakefulness. / Koves, P.; Halász, P.; Pal, I.

In: Ideggyógyászati szemle, Vol. 32, No. 5, 1979, p. 210-219.

Research output: Contribution to journalArticle

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