Electrocorticographic changes in temporal lobe epilepsy at rest and during induced sleep

Rovetta, P

doi:10.1016/0013-4694(59)90051-3

Cited by 7 publications

(1 citation statement)

References 17 publications

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“…In contrast to this, electrodes on the surface of the temporal cortex recorded abnormal activity best during deep sleep. In another study on subjects submitted to surgery for seizures, Rovetta indicated that intermittent epileptic spikes were best seen during light to moderate sleep when induced with intravenous penthothal (8). White, Eidelberg and French have reported that the direct cortical response in the motor region of monkeys is enhanced by light sleep but suppressed during deep sleep (11).…”

Section: Introductionmentioning

confidence: 99%

Electroencephalographic Abnormalities during Sleep as Related to the Temporal Distribution of Seizures

et al. 1962

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SUMMARY The sleep and awake EEG's of 90 epileptics and 30 normal controls were evaluated. The epileptics were divided into three groups: (1) Nocturnal seizures predominately, (2) Diurnal seizures predominately, (3) Mixed diurnal and nocturnal seizures. Patients with nocturnal seizures showed greater numbers and degrees of abnormalities during sleep EEG's. In patients with diurnal seizures abnormalities appeared about equally in sleep and awake EEG's. The stage of sleep most useful for detecting abnormalities was drowsiness‐light sleep. Depriving the patient of anticonvulsant medication for 24 hours did not increase the chance of abnormalities occurring during sleep recordings. The sleep recordings were conducted on a 16 channel electroencephalograph using bipolar and monopolar recording techniques simultaneously. Except that bipolar recordings seemed to detect foci better, these techniques appeared to be equal in their ability to display abnormalities associated with epilepsy. RÉSUMÉ Les E.E.G. enregistrés en sommeil ou en veille chez 90 épileptiques et 30 témoins normaux ont étéétudiés. Les épileptiques avaient été répartis en trois groupes: (1) Crises nocturnes prédominantes, (2) Crises diurnes prédominantes et (3) Crises diurnes et nocturnes mélangées. Les malades ayant des crises nocturnes ont donné dans ľE.E.G. en sommeil des anomalies en chiffres et en dégres plus élevés. Chez les malades souffrant de crises diurnes, les anomalies se sont manifestées à peu prés également dans ľE.E.G. pendant le sommeil et pendant la veille. La phase du sommeil la plus favorable à la détection ďanomalies a été celle ďun sommeil léger. La privation de médicament anticonvulsif infligée au malade pendant 24 heures n'a pas augmenté la chance des anomalies se produisant lors de ľenregistrement pendant le sommeil. Les E.E.G. pris pendant le sommeil ľont été avec électroencéphalographe à 16 canaux faisant un usage simultané de techniques bipolaires et monopolaires ďenregistrement. Exception faite du fait que ľenregistrement bipolaire a semblé mieux révéler les foci, ces techniques se sont montrées de valeur égale dans la détection des anomalies associées àľépilepsie.

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Section: Introductionmentioning

confidence: 99%