Special hearing tests are utilized to aid in differential diagnosis. The test battery traditionally includes speech discrimination tests, loudness function tests, and tests designed to measure tone decay. A more recent addition to this battery is the clinical application of impedance audiometry.
This paper suggests specific uses and interpretations of impedance audiometry together with auditory results in diagnosed cases of Meniere's disease and surgically confirmed acoustic neuromas. Test results for speech discrimination scores, Bekesy patterns, short increment sensitivity index test scores, and audiometric configurations are compared for a series of 202 acoustic neuromas reported at the Third Workshop and for a larger series of 384 cases.
Johnson EW. Clinical Application of Special Hearing Tests. Arch Otolaryngol. 1973;97(1):92–95. doi:10.1001/archotol.1973.00780010096023
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