Publications [#60378] of Leslie M. Collins

Papers Published

1. Yifang Xu and Collins, L.M., Threshold prediction for noise-modulated electrical stimuli using a stochastic auditory nerve model: implications for cochlear implants, 2002 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings (Cat. No.02CH37334), vol. vol.2 (2002), pp. 1929 - 32, Orlando, FL, USA [ICASSP.2002.1006146]
   (last updated on 2007/04/11)

   Abstract:
   The effect of a low level additive noise process on the input and output characteristics and threshold behavior of auditory nerves (ANs) is studied by means of a stochastic computational model. This paper derives the stochastic properties of the model input and output for adaptive threshold procedures. A closed form solution for the input, or amplitude, probability distribution is obtained via Markov models. The output statistics are derived by integrating over the noise-free probability mass function (PMF). All theoretical PMFs are verified by simulations. Theoretical threshold predictions as a function of noise level are made based on these PMFs and the results indicate that threshold is adversely affected by the presence of low levels of noise

   Keywords:
   acoustic noise;auditory evoked potentials;Gaussian noise;hearing aids;Markov processes;