Interaction Sleep and Epilepsy

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Abstract
In order to improve the diagnosis of epilepsy, a routine EEG recording can be supplemented with a long-lasting sleep recording or with an ambulatory EEG recording. In this paper we compare the all-night polygraphic sleep recording with the 3- to 5-hour recording after 1 night total sleep deprivation, and we discuss the outcome with each. In the first part we have analyzed the relationship between the clinical form of epilepsy and the kind and depth of sleep and we have tried to determine the optimal registration time (in hours) to obtain a maximum diagnostic gain. In the second part we have evaluated the changes in the sleep composition induced by the occurrence of epileptic EEG phenomena and by the intake of antiepileptic drugs. In the third part we have analyzed the changes in the morphological aspects of the epileptic EEG phenomena which can occur under influence of light (NREM 1-2) and deep (NREM 3-4) slow-wave sleep and REM sleep. A sufficient knowledge of these changes is very important to avoid misinterpretations.

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