Factors influencing the disappearance time of tinnitus in residual inhibition test

Factors affecting disappearance time of tinnitus in residual inhibition test were analyzed with the use of quantitative method I. One hundred thirty-five patients with unilateral tinnitus of a single kind were studied. Major factors influencing the time in residual inhibition test were found to be subjective pitch, purity and impurity of tinnitus tonality, age, and period of tinnitus. The disappearance time of tinnitus tended to prolonged in subjective low frequency, purity of tinnitus tonality and aged patients. These results may associated with physiological background of the tinnitus mechanism which produces such a tonality and/or aged patients.