Cochlear Implants – E F Evans (p.33)

In the past 20 years in particular, a revolution has occurred in the treatment of profound hearing loss (‘total deafness’), in the invention of cochlear implants. Since it was first demonstrated that hearing could be induced by electrical stimulation of the exposed cochlear nerve (Djourno & Eyries, 1957), tens of thousands of patients world- wide have received cochlear implants.