![]() “ The mechanical waveform of the basilar membrane. ![]() ![]() Frequency modulations (glides) in impulse responses and cross-correlation functions,” J. “ On cochlear encoding: Potentialities and limitations of the reverse-correlation technique,” J. “ Connecting frequency selectivity and nonlinearity for models of the cochlea,” Aud. “Quantifying the information in auditory-nerve responses for level discrimination,” JARO. “ Inner hair cell response patterns: implications for low-frequency hearing,” J. “ Response phase: A view from the inner hair cell,” J. “ Frequency glides in the impulse responses of auditory-nerve fibers,” J. “ Temporal coding of resonances by low-frequency auditory nerve fibers: Single fiber responses and a population model,” J. “ Temporal response properties of neurons in the auditory pathway,” Curr. “ Spatiotemporal encoding of sound level: Models for normal encoding and recruitment of loudness,” Hear. “ A model for the responses of low-frequency auditory nerve fibers in cat,” J. “ An auditory-periphery model of the effects of acoustic trauma on auditory nerve responses,” J. “ Properties of ‘two-tone inhibition’ in primary auditory neurons,” J. “ Temporal position of discharges in single auditory nerve fibers within the cycle of a sine-wave stimulus: Frequency and intensity effects,” J. The ability of this model to process arbitrary sound inputs makes it a useful tool for studying peripheral auditory processing. The incorporation of both the level-independent frequency glide and the level-dependent compressive nonlinearity into a phenomenological model for the AN was the primary focus of this work. In addition, this model has other important properties, such as nonlinear compression, two-tone suppression, and reasonable Q 10 values for tuning curves. The pole locations were continuously varied as a function of time by the control signal to change the gain and bandwidth of the signal path, but the instantaneous frequency profile in the revcor function was independent of sound pressure level, consistent with physiological data. Instantaneous frequency glides in the reverse-correlation (revcor) function of the model’s response to broadband noise were achieved by carefully restricting the locations of the poles and zeros of the bandpass filter. This model produced realistic response features to several stimuli, including pure tones, two-tone combinations, wideband noise, and clicks. The model’s signal path consisted of a time-varying bandpass filter the bandwidth and gain of the signal path were controlled by a nonlinear feed-forward control path. A computational model was developed to simulate the responses of auditory-nerve (AN) fibers in cat.
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