A Further Study of Recovery from Temporary Threshold Shift

Abstract

This paper describes the results of an analysis of 1950 curves of recovery from temporary threshold shift (TTS) to investigate the phenomena of diphasic recovery, sensitization and bounce higher than initial TTS. The phenomena were found to be closely related to the transition periods and the transition stimuli which are in turn associated with TTS. Individual differences in susceptibility were also revealed, although susceptibility to diphasic recovery was found to be associated with a lower susceptibility to sensitization and a higher susceptibility to bounce higher than the initial TTS. A “composite” theory is postulated to explain the phenomenon.