Abstract
In this study the distortion content of the microphonic potential at the apex of the cochlea, is compared to that derived from the basal region. Two high-frequency pure tones are used as primary stimulus. The difference tone present in the cochlear microphonics is analyzed with the aid of a wave analyzer. The results support the hypothesis that for moderate strength the distortion product is distributed along the length of the cochlea in the same manner as the primary stimulus.