Békésy Audiometry, Sisi-Test and Contralateral Masking: Preliminary Report

Preliminary investigations indicate that contralateral masking exerts a significant influence on auditory diagnostic procedures in which a sustained stimulation is involved. In Békésy tracings, masking caused separation between curves for interrupted and continuous tones and reduction of tracing width of the latter. In the SISI-test the scores improved at higher frequencies. In patients with VIIIth nerve lesion excessive temporary threshold shifts appeared when the unaffected ear was stimulated with continuous white noise.