Potential gradient of spike and wave temporal foci detected by vertical derivation and neo-electroencephalography.
We studied the electrical pattern of spikes and waves and unitemporal foci by compared analysis. One analysis was obtained by two conventional derivations: longitudinal plus triangular and referential to a neck electrode ('vertical derivation'). The other analysis is quantified by the same vertical derivation and by a monopolar-like computerized derivation, the Neo-EEG. With Neo-EEG we obtained a differential dissociation of the spike-and-wave type, and a better analysis of the cerebral dysfunction in temporal foci than in classical EEG. This leads to a sharper diagnosis of the disease it characterizes. This study also shows that one must be aware of the inadequacies and errors resulting from conventional recording because of the bipolar derivations.
Gillain
C A
CA
Centre neurologique Floréal, Bruxelles, Belgique.
Peters
J P
JP
Sorel
L
L
D003937:Diagnosis, Differential; D004292:Dominance, Cerebral / Q000502:physiology; D004566:Electrodes; D004569:Electroencephalography / Q000145:classification / Q000295:instrumentation*; D004833:Epilepsy, Temporal Lobe / Q000175:diagnosis / Q000503:physiopathology*; D005071:Evoked Potentials / Q000502:physiology; D006801:Humans; D008432:Mathematical Computing; D012016:Reference Values; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D013702:Temporal Lobe / Q000503:physiopathology