Lempert (1946) reported that tympanic neurectomy reduced tinnitus in two-thirds of sufferers.8 Lempert’s observation was partially confirmed by Tsyganov in 1968. A student of tinnitus has no difficulty finding lists of conditions or mechanisms that cause, or are at least believed to cause, tinnitus. Brackmann (1981a) reported that tinnitus was present in 83 percent of a group of 500 patients suffering from unilateral tumors of the eighth nerve and that tinnitus was the first symptom noticed by about 10 percent of that group. Graham estimates that about two-thirds of the tinnitus sufferers had at least one episode a week. Vestibular stimulation has been reported to alleviate central pain.