Abstract
A previously reported model for basilar-membrane motion [Kim et al., J. Acoust. Soc. Amer. 53 (1973)] generates many nonlinear phenomena observed in responses of single cochlear nerve fibers including combination tones (n+1)f1−nf2, where f1<f2, but does not account for other cochlear nerve nonlinear phenomena such as distortion components f2−f1, 2f1, f1+f2, and 2f2 which we have observed. Augmenting the basilar-membrane model by adding a noise waveform, rectification, and refractory effects produces a model with spike-discharge activity of single cochlear nerve fibers as the output and stapes displacement as the input. This model simulates (a) the linear response characteristics of spontaneously active cochlear nerve fibers at sufficiently low input levels (Littlefield et al., paper K5); (b) most of the nonlinear response characteristics of single cochlear nerve fibers at moderate-to-high input levels; (c) the smooth transition from the linear to the nonlinear response patterns; and (d) the observed lack of suppression of spontaneous activity by an externally applied tone. [This study was supported in part by grants from the U. S. Public Health Service.]
Published Version (
Free)
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call