The study of hearing, especially of impaired hearing that cannot be corrected by drugs or surgery.
n. the study of disorders of hearing.
n. 1. (in physiology) the phenomenon whereby an increase in the strength of a stimulus or repetition of the stimulus will stimulate increasing numbers of nerve cells to respond. 2. (in audiology) the phenomenon in which a person with sensorineural deafness cannot hear quiet sounds but can perceive loud sounds just as loudly as, or even more loudly than, a person with normal hearing.... recruitment
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