Abstract
Electrical stimulation through a round window electrode has been evaluated
in 9 patients with unilateral deafness and severe tinnitus. Three
subjects were permanently implanted with positive long lasting results.
Analysis of the threshold of sound perception, tinnitus suppression
and auditory discomfort levels as a function of current frequency
revealed the advantage of low frequency stimulation. In 2 patients
the loudness of electrically evoked sound perception was balanced
against tones in the hearing ear. Our results can be interpreted
as indicating that processes other than auditory masking are responsible
for electrical tinnitus suppression.
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