Threshold Adaptation following Brief Recovery and Békésy Audiometry in Impaired Ears.

Autor: Lotterman, Stephen H., Kasten, Roger N., Revoile, Sally G.
Zdroj: Journal of the Acoustical Society of America; 1966, Vol. 40 Issue 5, p1239-1239, 1p
Abstrakt: The study examined the relationship of Békésy audiometric tracings to threshold adaptation following brief recovery periods in sensorineural ears. Fixed-frequency interrupted and continuous self-recorded threshold tracings were obtained at 500, 2000, and 4000 Hz. Threshold adaptation was induced through the introduction of steady-state adapting tones 10 dB above the midpoint of the interrupted threshold tracing. Each decrease of the perceived signal to inaudibility resulted in the introduction of a 125-, 250-, 500-, 1000-, or 2000-msec interruption (25-msec rise/decay times) in the presentation. The subjects were exposed to five test runs of 2 min each at 500, 2000, and 4000 Hz. The influence of interruption duration upon subsequent tonal perception and its relationship to Békésy audiometric patterns is discussed. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index