We describe ictal clinical manifestations of frontal lobe epileptic seizures in 22 patients. After examination of all ictal clinical data, 14 catergories of signs and symptoms were established. The validity of the ictal clinical data used was confirmed on the basis of 99 frontal lobe seizures recorded by tele-electroencephalogram or tele-stereo-electroencephalogram. The main conclusion is that the frontal lobe appears to be partially connected with motor acitivity.
Summary: A retrospective clinical study is presented which is based on 133 patients with uncontrolled temporal lobe seizures who underwent bilateral stereoelectroencephalographic exploration. The aim of the study was to evaluate quantitatively the degree of agreement among spontaneous and chemically and electrically induced seizures, as well as between each of these seizures and the spontaneous interictal activity (“spiking”). To simplify the problem, only the side of origin and not the exact site of onset of the ictal discharge within the temporal lobe was dealt with. Special attention was paid to whether or not a seizure propagated to the homotopic regions of the opposite hemisphere, thus dealing with the still controversial question of the independent secondary epileptogenic lesion or “mirror” focus in man. The clinical outcome of surgery in 64 cases of temporal lobe epilepsy in which the operation was based on the conclusions of the SEEG exploration with or without recording of spontaneous seizures confirmed the outstanding importance of the spontaneous seizures in identifying the side of the primary epileptogenic zone. The degree of positive correlation between the spontaneous and the induced seizures varied from 77% for the electrically and 60% for the chemically induced seizures. On the other hand, the spontaneous interictal activity agreed only in approximately two‐thirds of cases: best with the electrically induced and less with the spontaneous seizure. Chemically induced seizures agreed the least. The authors conclude: (1) Because of relatively frequent discrepancies between the side of onset of the seizures and the lateralization of interictal epileptic activity, the recording of seizures is of primary importance for assessing the results of the SEEG examination. (2) The recording of spontaneous seizures is preferable to that of electrically or chemically induced seizures. (3) The reliability of the lateralization suggested by electrically induced seizures is somewhat higher than that of chemically provoked seizures. (4) Special caution should be exercised in determining the lateralization of seizures with contralateral propagation.
RÉSUMÉ
Une étude clinique rétrospective est faite sur 133 malades présentant une épilepsie du lobe temporal résistant à la thérapeutique et ayant subi une exploration stéréo‐EEG bilatérale. Le but de ce travail est Ďévaluer quantitativement les rapports entre les différents types de crises (spontanées, induites par des moyens chimiques et par la stimulation électrique). Une corrélation a également été faite entre les différents types de crises et Ľactivité intercritique spontanea (pointes). Pour simplifier le probleme, seul le côté de la décharge critique onginelle dans le lobe temporal a été envisage. Un interet particulier a porte sur le probleme de la propagation dventuelle aux regimes homologues de l'hemisphere oppose dans le but de discuter la question controversy des lesions epileptogènes secondares indépendantes ou des “foyers en miroir” chez l'homme. Les interventi...
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