当院における機能性難聴の検査法

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  • The Current Diagnostic Hearing Tests for Non-organic Deafness in Our Hospital.

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The inconsistency of pure tone averages and speech discrimination scores is often clue to diagnose non-organic deafness. But it can not be enough to diagnose this disease definitely and requires some additional hearing examinations including Bekesy's audiometry, stapedial reflex, Stenger's method, ABR, CNV, and SVR.<br>Recently we developed the new hearing tests for non-organic deafness with the binaural sound stimulation, that is, time-shift evoked potentials and midline sound imaging test. The former corresponded to the low tone (500Hz) hearing acuity and the latter revealed the true hearing threshold levels of non-organic hearing loss patient with ease. And these new hearing tests were compared with the ordinary examinations in 21 cases (32 ears) of non-organic deafness and confirmed to be useful for not only the diagnosis but also treatment of this disease.

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