When conventional behavioural audiometry is difficult or impossible, or when its results are inaccurate or suspect, there is a need for more objective hearing tests. Candidates for such tests include young infants, uncooperative, hyperactive, or neurologically impaired children, and those suspected of non-organic hearing loss. The usual goal is to approximate pure tone thresholds, using some me...

Pelmear, P. L. and Hughes, Brenda J. (1974). British Journal of Industrial Medicine, 31, 304-309. Self-recording audiometry in industry. A study of initial and repeat audiograms of 118 drop forge employees using fixed frequency self-recording audiometry showed that the mean of the differences at the test frequencies 0 5, 1, 2, 3, 4, and 6 kHz ranges from 0 47 dB to + 0-61 dB. The largest standa...

Killer whale (Orcinus orca) audiograms were measured using behavioral responses and auditory evoked potentials (AEPs) from two trained adult females. The mean auditory brainstem response (ABR) audiogram to tones between 1 and 100 kHz was 12 dB (re 1 mu Pa) less sensitive than behavioral audiograms from the same individuals (+/- 8 dB). The ABR and behavioral audiogram curves had shapes that were...

A leading cause of preventable sensorineural hearing loss is therapeutic treatment with medications that are toxic to inner ear tissues, including certain drugs used to fight cancer and life-threatening infectious diseases. Ototoxic-induced hearing loss typically begins in the high frequencies and progresses to lower frequencies as drug administration continues (Campbell & Durrant, 1993; Campbe...