Evidence for neural wavelet packet computations

Averaged multiunit potentials elicited by biologically relevant acoustic st imuli strongly resemble Symlet wavelet packets in bat auditory cortex as de termined by cross correlation analysis. Since neurons are thought to encode information digitally using rate codes, this result suggested the possibil ity of analog neurocomputing. The characteristic signature of symlet wavele t packet computations typically employs dyadic scaling and translations. We sought additional indications of analog neurocomputing by examining the di stribution-averaged potential durations and response latencies for evidence of dyadic scaling. We report here evidence of dyadic scaling in averaged p otential duration and response latency distributions. (C) 1999 Elsevier Sci ence B.V. All rights reserved.