Tinnitus (TI) is held to be a symptom that is usually associated with hearing losses of various origin (Chaba, 1982). This notion was, at least partially, supported by Berlin. In a number of patients with Tl, who did not show hearing losses on discretefrequency audiometry, he demonstrated small circumscribed losses at between frequencies by means of Békésy audiometer with a continuous-frequency sweep. Berlin then proposed that in some other patients, in whom hearing losses are not evident, these may be located in the highfrequency region, beyond the reach of conventional audiometry, i.e., beyond 8 kHz.
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Tonndorf et al. (1984) studied this question.
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