The mechanism for stochastic resonance enhancement of mammalian auditory information processing |
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Authors: | Dawei Hong Joseph V Martin William M Saidel |
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Institution: | (1) Department of Computer Science, Rutgers University, Camden, New Jersey, USA;(2) Department of Biology, Rutgers University, Camden, New Jersey, USA |
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Abstract: | Background In a mammalian auditory system, when intrinsic noise is added to a subthreshold signal, not only can the resulting noisy signal
be detected, but also the information carried by the signal can be completely recovered. Such a phenomenon is called stochastic
resonance (SR). Current analysis of SR commonly employs the energies of the subthreshold signal and intrinsic noise. However,
it is difficult to explain SR when the energy addition of the signal and noise is not enough to lift the subthreshold signal
over the threshold. Therefore, information modulation has been hypothesized to play a role in some forms of SR in sensory
systems. Information modulation, however, seems an unlikely mechanism for mammalian audition, since it requires significant
a priori knowledge of the characteristics of the signal. |
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Keywords: | |
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