pure tone audiometry - definition of pure tone audiometry in the Medical dictionary - by the Free Online Medical Dictionary, Thesaurus and Encyclopedia.

audiometry /au·di·om·e·try/ (aw″de-om´ĭ-tre) measurement of the acuity of hearing for the various frequencies of sound waves.audiomet´ric

Békésy audiometry that in which the patient, by pressing a signal button, traces monaural thresholds for pure tones: the intensity of the tone decreases as long as the button is depressed and increases when it is released; both continuous and interrupted tones are used.

cortical audiometry an objective method of determining auditory acuity by recording and averaging electric potentials evoked from the cortex of the brain in response to stimulation by pure tones.

electrocochleographic audiometry measurement of electrical potentials from the middle ear or external auditory canal (cochlear microphonics and eighth nerve action potentials) in response to acoustic stimuli.

electrodermal audiometry audiometry in which the subject is conditioned by harmless electric shock to pure tones, thereafter anticipating a shock when hearing a pure tone; the anticipation results in a brief electrodermal response, which is recorded; the lowest intensity at which the response is elicited is taken to be the hearing threshold.

localization audiometry a technique for measuring the capacity to locate the source of a pure tone received binaurally in a sound field.

pure tone audiometry audiometry utilizing pure tones that are relatively free of noise and overtones.

pure tone audiometry.

See audiometry.

pure tone audiometry

Audiology A hearing test in which the person is exposed to a series of pure tones over a range of frequencies, the data from which are placed in graphic form–an audiogram. See AC-BC gap, Audiogram.