Information-Theoretic Analysis of Neural Coding |
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| Authors: | Don H Johnson Charlotte M Gruner Keith Baggerly Chandran Seshagiri |
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| Institution: | (1) Department of Electrical and Computer Engineering and Department of Statistics, Computer and Information Technology Institute, Rice University, MS 366, Houston, TX, 77251-1892;(2) Department of Electrical and Computer Engineering, Computer and Information Technology Institute, Rice University, MS 366, Houston, TX, 77251-1892;(3) Department of Statistics, Computer and Information Technology Institute, Rice University, MS 366, Houston, TX, 77251-1892 |
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| Abstract: | We describe an approach to analyzing single- and multiunit (ensemble) discharge patterns based on information-theoretic distance measures and on empirical theories derived from work in universal signal processing. In this approach, we quantify the difference between response patterns, whether time-varying or not, using information-theoretic distance measures. We apply these techniques to single- and multiple-unit processing of sound amplitude and sound location. These examples illustrate that neurons can simultaneously represent at least two kinds of information with different levels of fidelity. The fidelity can persist through a transient and a subsequent steady-state response, indicating that it is possible for an evolving neural code to represent information with constant fidelity. |
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| Keywords: | neural coding information theory lateral superior olive |
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