Efficient coding of natural sounds Export

@article{LEW02, abstract = {The auditory system encodes sound by decomposing the amplitude signal arriving at the ear into multiple frequency bands whose center frequencies and bandwidths are approximately exponential functions of the distance from the stapes. This organization is thought to result from the adaptation of cochlear mechanisms to the animal's auditory environment. Here we report that several basic auditory nerve fiber tuning properties can be accounted for by adapting a population of filter shapes to encode natural sounds efficiently. The form of the code depends on sound class, resembling a Fourier transformation when optimized for animal vocalizations and a wavelet transformation when optimized for non-biological environmental sounds. Only for the combined set does the optimal code follow scaling characteristics of physiological data. These results suggest that auditory nerve fibers encode a broad set of natural sounds in a manner consistent with information theoretic principles.}, address = {Computer Science Department and Center for the Neural Basis of Cognition, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, USA. lewicki@cnbc.cmu.edu}, author = {Lewicki, Michael S.}, citeulike-article-id = {311193}, citeulike-linkout-0 = {http://dx.doi.org/10.1038/nn831}, citeulike-linkout-1 = {http://dx.doi.org/10.1038/nn831}, citeulike-linkout-2 = {http://view.ncbi.nlm.nih.gov/pubmed/11896400}, citeulike-linkout-3 = {http://www.hubmed.org/display.cgi?uids=11896400}, day = {18}, doi = {10.1038/nn831}, issn = {1097-6256}, journal = {Nature Neuroscience}, keywords = {audition, coding, sparse}, month = {March}, number = {4}, pages = {356--363}, posted-at = {2008-08-11 14:22:41}, priority = {0}, publisher = {Nature Publishing Group}, title = {Efficient coding of natural sounds}, url = {http://dx.doi.org/10.1038/nn831}, volume = {5}, year = {2002} }

TY - JOUR ID - LEW02 L3 - citeulike-article-id:311193 N2 - The auditory system encodes sound by decomposing the amplitude signal arriving at the ear into multiple frequency bands whose center frequencies and bandwidths are approximately exponential functions of the distance from the stapes. This organization is thought to result from the adaptation of cochlear mechanisms to the animal's auditory environment. Here we report that several basic auditory nerve fiber tuning properties can be accounted for by adapting a population of filter shapes to encode natural sounds efficiently. The form of the code depends on sound class, resembling a Fourier transformation when optimized for animal vocalizations and a wavelet transformation when optimized for non-biological environmental sounds. Only for the combined set does the optimal code follow scaling characteristics of physiological data. These results suggest that auditory nerve fibers encode a broad set of natural sounds in a manner consistent with information theoretic principles. IS - 4 JF - Nature Neuroscience SN - 1097-6256 AD - Computer Science Department and Center for the Neural Basis of Cognition, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, USA. lewicki@cnbc.cmu.edu EP - 363 TI - Efficient coding of natural sounds PB - Nature Publishing Group VL - 5 SP - 356 KW - audition KW - coding KW - sparse AU - Lewicki, Michael PY - 2002/03/18/ UR - http://dx.doi.org/10.1038/nn831 ER -