Effects of nonlinearities on speech encoding in the auditory nerve

摘要: In this paper we will consider some effects of auditory‐nerve nonlinearities on the representation complex stimuli such as vowels. At low sound levels, profiles discharge rate versus characteristic frequency in populations fibers show well‐defined peaks at frequencies corresponding to formants a vowel stimulus. levels above about 60 dB SPL, these are not seen, primarily because saturation. addition, related two‐tone suppression act strongly units with vicinity second and third formants, suppressing their responses high contributing loss distinct region. Units spontaneous rates less than 1/s more dramatically do higher units; despite suppression, however, population retains formant its up least 20 does popula...