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Summary
The complementary nature of audiological tests in the investigation of vertigo is explained. Diagnostic audiological investigations include: (i)pure-tone audiometry, to establish the extent and characteristics of any hearing loss present and whether there is any middle-ear disorder which may account for the vestibular symptoms, (ii) recruitment, adaptation and discrimination tests, for the differentiation of sensory from peripheral neural dysfunction, together with new tests such as psychoacoustic tuning curves and temporal auditory acuity measurements, (iii) acoustic impedance and reflex measurements, for multiple purposes, (iv) electric response audiometry, especially when there is insufficient residual hearing for the employment of subjective tests in the second category above, or where there is a suspicion of a central auditory lesion, and (v) special applications of audiometry in diagnostic/therapeutic tests, e.g. for endolymphatic hydrops and for perilymph leakage. Therapeutic implications of audiometric tests on vertiginous patients include indications for particular forms of surgery, monitoring of progress in medical or surgical treatment of Ménière's disease, and the assessment of associated hearing loss and/or tinnitus with view to their management by means of hearing aid and/or tinnitus masker.