Spectral Enhancement of Sounds by the Stellate Microcircuit of the Ventral Cochlear Nucleus
نویسندگان
چکیده
T Stellate (TS) cells in the auditory cochlear nucleus have been shown experimentally to accurately encode sound over a range of input sound pressure levels (SPL) in the presence of significant noise. One function postulated for the stellate cell circuit is to increase the dynamic range and signal-to-noise ratio (SNR) of the incoming signal, more accurately highlighting significant frequencies. A network model utilising leaky integrate-and-fire neurons, wide-band lateral inhibition, and selective processing of inputs is developed to reproduce the stellate microcircuit function. Model simulation demonstrates enhancement of peak identification and dynamic range with tone and vowel stimuli.
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