Computational Neurobiology Lab

Michael S. Lewicki

I have moved to the Computer Science Department at Carnegie Mellon.
I am currently in the Center for the Neural Basis of Cognition.
My new contact information is:

    Dr. Michael Lewicki
    CMU/CNBC
    Mellon Institute, 115
    4400 Fifth Ave.
    Pittsburgh, PA  15213

    Phone: 412-268-3921
    Fax:   412-268-5060
    Email: lewicki@cnbc.cmu.edu
    WWW:   www.cnbc.cmu.edu/people/lewicki.html

Last updated  Feb 18, 1999. 

Research Papers

Representation and Learning

Lewicki, M.S. and Olshausen, B.A. (1998) ``A probabilistic framework for the adaptation and comparison of image codes.'' J. Opt. Soc. Am. A: Optics, Image Science, and Vision (submitted). abstract, compressed postscript .

 Lewicki, M.S. and Sejnowski, T.J. (1998) ``Learning overcomplete representations.'' to appear in Neural Comp. abstract, compressed postscript .

 Lewicki, M.S. and Sejnowski, T.J. (1996) ``Bayesian unsupervised learning of higher order structure.'' Advances in Neural Information Processing Systems 9. abstract, compressed postscript .
 

Independent Component Analysis

Lee, T.-W., Lewicki, M.S., and Sejnowski, T.J. (1998) ``ICA Mixture Models for Unsupervised Classification and Automatic Context Switching.'' International Workshop on Independent Component Analysis (ICA'99).

Lee, T.-W., Lewicki, M.S., and Sejnowski, T.J. (1998) ``Unsupervised Classification with Non-Gaussian Mixture Models using ICA.''  to appear in Advances in Neural Information Processing Systems 11.

Lee, T.-W., Lewicki, M.S., Girolami, M., and Sejnowski, T.J. (1998) ``Blind source separation of more sources than mixtures using overcomplete representations.'' to appear in IEEE Sig. Proc. Lett. preprint
 

Songbird physiology

Lewicki, M.S (1996) ``Intracellular characterization of song-specific neurons in the zebra finch auditory forebrain.'' J. Neurosci. 16(18):5854-5863. abstract. online article and pdf file from J. Neuroscience.

 Lewicki, M.S. and Konishi, M. (1995) ``Mechanisms underlying the sensitivity of songbird forebrain neurons to temporal order.'' Proc. Natl. Acad. Sci. USA 92:5582-5586. abstract.

Vu, E.T. and Lewicki, M.S. (1994) ``Intrinsic interactions between zebra finch HVc neurons involve NMDA-receptor mediated activation.'' Soc. Neurosci. Abstr. 20:166. abstract.
 

Spike sorting

Lewicki, M.S. (1994) ``Bayesian modeling and classification of neural signals.'' Neural Comp. 6:1005-1030. abstract, compressed postscript , associated reference.

 Software for Bayesian spike sorting is available at the Konishi lab anonymous FTP server at Caltech. A working copy of source and binaries that run under Linux is available here. This was packaged by Jamier Mazier who also coded the much of the graphical interface.

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