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Published online by Cambridge University Press: 27 March 2025
I became interested in tinnitus, after a particular observation we made in Bordeaux on a deaf patient, while studying the effects of electrical stimulation of the ear as a means of artificial auditory stimulation (Cazals et al., 1978; Portmann et al., 1979). Indeed such electrical stimulation has been tried many times and was taken over again in about the 1970's by House and Urban (1973), Michelson (1971) and others (Merzenich et al., 1974).
The questions we were asking at the time were whether there were many deaf patients who could eventually benefit from such a procedure and to know whether, for instance, they would have enough, if any, remaining nerve fibers in their cochleas available for their electrical stimulation. So we undertook the simplest way of studying this, by applying, in totally deaf patients, electrical stimulation to the cochlea; and by investigating the sensation evoked in the patient by this electrical stimulation, as it has been done also by many other investigators.