A case is reported in which a Nucleus 22 channel intracochlear implant
was used to treat a deaf Hungarian woman (aged 37 years) with a 34-ye
ar history of grand mal (GM) epilepsy maintained on carbamazepine-diaz
epam combination therapy who had not benefited from conventional heari
ng aids. Pre-operative electrical stimulation of the acoustic nerve, h
owever, exhibited a good nerve function with no evidence of abnormal w
aveforms in the electroencephalogram (EEG). Successful intracochlear i
nsertion of the 22 electrode resulted in a 40 dB hearing improvement a
t frequencies 250-2000 Hz in the implanted ear with no signs of pathol
ogic wave activity at either the previously recognized epileptic focus
(fronto-precentral region) or indeed, in other regions of the brain a
t use of the implant. We conclude that intracochlear implantation per
se is not a hazardous intervention in patients with fronto-precentral
epileptic foci.