Middle latency auditory evoked potentials in epilepsy.
Middle latency auditory evoked potentials (MLAEPs) have been recorded after cortical lesions and seizure surgery. We recorded interictal MLAEPs in 14 patients with well documented complex partial and secondary generalized seizures. Na and Pa potentials did not differ in latency between patients and controls, although both were longer among seizure patients. Pa and Na were significantly reduced in amplitude in complex partial seizure patients compared to controls. These findings accord with previous suggestions that MLAEPs may be generated subcortically but modulated by temporal lobe structures. MLAEPs may be of value in differentiating temporal and extratemporal epilepsy. They may also help clarify interictal cognitive or behavioral symptoms related to epilepsy or the effects of antiepileptic medication.
Weate
S J
SJ
Department of Neurology, Ohio State University Medical Center, Columbus 43210, USA.
Drake
M E
ME
Newell
S A
SA
D000293:Adolescent; D000328:Adult; D000368:Aged; D000927:Anticonvulsants / Q000627:therapeutic use; D002540:Cerebral Cortex / Q000187:drug effects / Q000503:physiopathology; D002648:Child; D003937:Diagnosis, Differential; D004569:Electroencephalography / Q000187:drug effects; D004828:Epilepsies, Partial / Q000175:diagnosis / Q000188:drug therapy / Q000503:physiopathology*; D004833:Epilepsy, Temporal Lobe / Q000175:diagnosis / Q000188:drug therapy / Q000503:physiopathology*; D005072:Evoked Potentials, Auditory / Q000187:drug effects / Q000502:physiology*; D005260:Female; D005583:Fourier Analysis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011930:Reaction Time / Q000187:drug effects / Q000502:physiology*; D012016:Reference Values
D000927:Anticonvulsants