[The "epileptogenic zone" in humans: representation of intercritical events by spatio-temporal maps].
In the preoperative investigation of partial epilepsies, electrical characteristics of the so-called epileptogenic area are of critical interest to localize this area. We have always emphasized that the analysis of ictal events themselves, is more valuable than that of inter-ictal anomalis. One reason for this emphasis has been the absence of a reliable method to evaluate the relationship between the topography of ictal and interictal events. An technique for imaging an intracerebral potential field is reported. It allows to analyse the spatio-temporal distribution of interictal events recorded during the SEEG exploration. This technique applied to an illustrative patient shows that the temporo-spatial distribution of interictal spikes is related to that of the ictal discharge itself. A new hypothesis concerning the build up of an epileptogenic area in man is presented.
Chauvel
P
P
INSERM U97, Paris.
Buser
P
P
Badier
J M
JM
Liegeois-Chauvel
C
C
Marquis
P
P
Bancaud
J
J
D000328:Adult; D001931:Brain Mapping; D004569:Electroencephalography; D004827:Epilepsy / Q000473:pathology / Q000503:physiopathology*; D005625:Frontal Lobe / Q000473:pathology / Q000503:physiopathology*; D006801:Humans; D008297:Male; D013702:Temporal Lobe / Q000473:pathology / Q000503:physiopathology*
La "zone épileptogène" chez l'homme: représentation des événements intercritiques par cartes spatio-temporelles.