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- W143036209 abstract "ABSTRACT All of an organism's knowledge about the acoustic world is coded in the spike trains of its auditory nerve fibers. Several fundamental aspects of this internal representation are not well understood: How much information is carried by the auditory nerve and how efficient is the coding of information? What is the role of nonlinearities in the coding of complex, natural stimuli? Is the code structured to make subsequent computation simple? We have recently developed methods for decoding neural spike trains in real time to estimate continuous input stimuli. Here we extend this approach to non-phase locked cells, for which we reconstruct the stimulus envelope. These methods allow us to quantify the performance of the auditory neural code in single afferent fibers and to begin to address the issues listed above. In particular, we measure the information transfer rate in a spike train directly as the information we gain about the auditory stimulus by observing the spikes. Comparing the experimental information rate with an upper bound to the rate determined by the statistics of the spike trains results in a direct measure of the efficiency of the coding process. In a single cell in the bullfrog auditory system we measure information rates as high as 160 baud (∼3 bits/spike) and coding efficiencies greater than 50%." @default.
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- W143036209 date "1992-01-01" @default.
- W143036209 modified "2023-09-27" @default.
- W143036209 title "Real Time Coding of Complex Sounds in the Auditory Nerve" @default.
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- W143036209 doi "https://doi.org/10.1016/b978-0-08-041847-6.50041-1" @default.
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