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Top blue bar image Department of Biochemistry & Cell Biology

Raymon Glantz

Professor Emeritus of Biochemistry and Cell Biology

Our research is focused on the synaptic mechanisms by which neuronal networks filter, compute and encode sensory information. Our experimental model is the optic lobe of the crayfish, which maps the visual world through a retinotopically organized neuronal lattice. About 15 types of cells have been identified by their characteristic morphology and visual signal capabilities. Glantz's ResearchWe presently focus on the mechanisms of orientation vision, directional motion detection and polarized light vision, and information coding by impulse trains. The orientation and directional sensitivity are examined in each cell class over a range of visual stimulus parameters. The synapses are characterized with biophysical, pharmacological and neurochemical methods. These results are compared to the output of a simulated network of interneurons that contain the principal features of the physiologically defined pathway. The simulations highlight the operations that each cell performs on its input array to achieve the measured output.

Select Publications

Glantz, R.M., Miller, C.S., and Johnson, D. Information processing in a neural system.  Neurocomputing 2007In Press

Glantz, R.M., and Schroeter, J.P. Orientation by polarized light in the crayfish dorsal light reflex: Behavioral and neurophysiological studies.  J. Comp. Physiol. A., 193 2007: 371-384

Glantz, R.M. The distribution of polarization sensitivity in the crayfish retinula.  J. Comp. Physiol., 193 2007: 893-991

Glantz, R.M., and Schroeter, J.P. Polarization contrast and motion deection.  J. Comp. Physiol. A., 192 2006: 905-914

Glantz, R.M., and Schroeter, J.P. Encoder adaptation modulates the visual responses of crayfish interneurons.  J. Neurophysiol., 92 2004: 327-340

Glantz, R.M., and Schroeter, J.P. Gain control and precision in crayfish visual interneurons: Analysis and simulation.  J. Neurophysiol., 92 2004: 2747-2761

Rozell, C.J., Johnson, D.H., and Glantz, R.M. Measuring information transfer in the spike generator of crayfish sustaining fibers.  Biol. Cybern., 90 2004: 89-97

Miller, C.S., Johnson, D.H., Schroeter, J.P., Myint, L.L., and Glantz, R.M. Visual responses of crayfish ocular motoneurons: An information theoretical analysis.  J. Comput. Neurosci., 15 2003: 247-269

Glantz, R.M., and Schroeter, J.P. A nonlinear encoder in crayfish sustaining fibers.  Neurocomputing, 44 2002: 109-114

Glantz, R. Signal processing in the crayfish optic lobe.  The Crustacean Nervous System 2002: 486-498

Miller, C.S., Johnson, D.H., Schroeter, J.P., Myint, L., and Glantz, R.M. Visual signals in an optomoter reflex: Systems and information theoretic analysis.  J. Comput. Neurosci., 13 2002: 5-21

Glantz, R.M., and Barnes, W.J.P. Visual systems: Neural mechanisms and visual behavior.  K. Wiese (ed), Crustacean Experimental Systems in Neurobiology 2002: 203-226

Glantz, R.M. Polarization Analysis in the Crayfish Visual System.  J. Exp. Biol., 204 2001: 2383-2390

Johnson, D.H., Gruner, C.M., and Glantz, R.M. Quantifying Information Transfer in Spike Generation.  Neurocomputing, 33 2000: 1047-1054

Glantz, R.M., Miller, C.S., and Nassel, D.R. Tachykinin-related Peptide and GABA-mediated Presynaptic Inhibition of Crayfish Photoreceptors.  J. Neuroscience, 20 2000: 1780-1790

Miller, C.S., and Glantz, R.M. Visual Adaptation Modulates a Potassium Conductance in Retinular Cells of the Crayfish.  Visual Neuroscience, 17 2000: 353-368

Glantz, R.M., and Bartels, A. A Cellular Model for the Mechanism of Directionally Selective Visual Motion Detection in Crayfish Tangential Cells.  Computational Neuroscience -- Trends in Research 1999 1999: 53-60

Bartels, A., and Glantz, R.M. A Cellular Model of Directionally Selective Visual Motion Detection in Crayfish Tangential Cells.  Neurocomputing, 27 1999: 53-59

Glantz, R.M., Miller, C.S., and Johnson, D. Information Processing in a Neural System.  Neurocomputing in press

  • B.A. Psychology, Biology (1963) Brooklyn College, C.U.N.Y.
  • M.S. Physiology, Psychology (1964) Syracuse University
  • Ph.D. (1967) Syracuse University
  • Keck Center for Quantitative Biomedical Sciences
  • Ken Kennedy Institute for Information Technology
  • Neurophysiology, computational biology, sensory information processing, neural networks.
Email: rmg@rice.edu
Phone: 713-348-4915
Office: 213 Anderson Biological Labs,