Computational Analysis of Hair Cell and Auditory Nerve Processes

The mammalian cochlea must transduce an acoustic signal that has a dynamic range of 100 dB and a bandwidth that ranges up to 150 kHz in some species. The high information rate of the acoustic environment must be encoded in the activity of auditory nerve fibers that have average firing rates of only 200 pulses/sec or less. This encoding process must preserve the temporal information in the acoustic signal because interaural time delays in the microsecond range are used for source localization and because many natural acoustic sources produce signals with similar spectral characteristics, but different temporal characteristics.

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