Auditory Adaptation at Threshold Intensities

Abstract

Using the technique of manual adaptation test, recordings of perstimulatory changes at threshold were made during a 3-min. stimulation period on 300 patients, suffering mainly of perception deafness. Results are reported of the magnitude of the perstimulatory threshold shift at various frequencies, of the relation of this shift to recruitment phenomenon, and of the frequency of cases with extreme tone decay in various diagnostic groups.