Visual Processing Laboratory

• Cao X, Merwine DK, Grzywacz NM.(2009) Dependence of Retinal Ganglion Cell's Response to Natural Images on the Receptive-Field Center and Surround. Submitted for publication
  
• Zucker CL, Nilson JE, Ehinger B, Grzywacz NM.(2005) Compartemental Localization of Aminobutyric Acid Type B Receptors in the Cholinergic Circutiry of the Rabbit Retina The Journal of Comparitive Neurology 493: 448-459
  
• Amthor FR, Tootle JS, Grzywacz NM.Stimulus-Dependent Correlated Firing in Directionally Selective Retinal Ganglion Cells Visual Neuroscience. 2005 (In Press).
  
• Barraza, J.F., and N.M. Grzywacz (2005) Parametric Decomposition of Optic Flows by Humans.Vision Res. 45, 2481-91.
• Lee EJ, Song MC, Kim HJ, Lim EJ, Kim IB, Oh SJ, Moon JI, Chun MH. Brain-derived neurotrophic factor modulates the dopaminergic network in the rat retina after axotomy. Cell Tissue Res. 2005 Aug 2;:1-9 [Epub ahead of print].
• Grzywacz NM. Merwine DK. (2003). Directional Selectivity. Handbook of Brain Theory and Neural Networks, Second Edition, M.A. Arbib (Ed.), 353-357. MIT Press, Cambridge, Massachusetts, USA.
• Garcia M. Grzywacz NM. De Juan, J. (2002). Interocular Effect of Intravitreal Injection of 6-Hydroxydopamine and Dopamine on Spinule Formation in Teleost Retina. Histology and Histopatholgy,17:721-729.
• Grzywacz NM. Merwine DK. Amthor FR. (1998 Nov-Dec). Complementary roles of two excitatory pathways in retinal directional selectivity. Visual Neuroscience. 15(6):1119-27.
• Merwine DK. Grzywacz NM. Tjepkes DS. Amthor FR. (1998 Nov-Dec). Non-monotonic contrast behavior in directionally selective ganglion cells and evidence for its dependence on their GABAergic input. Visual Neuroscience. 15(6):1129-36.
• Grzywacz NM. Amthor FR. Merwine DK. (1998 Oct 15). Necessity of acetylcholine for retinal directionally selective responses to drifting gratings in rabbit. Journal of Physiology. 512 (Pt 2):575-81.
• Grzywacz NM. Tootle JS. Amthor FR. (1997 Jan-Feb). Is the input to a GABAergic or cholinergic synapse the sole asymmetry in rabbit's retinal directional selectivity? Visual Neuroscience. 14(1):39-54.
• Smith RD. Grzywacz NM. Borg-Graham LJ. (1996 May-Jun). Is the input to a GABAergic synapse the sole asymmetry in turtle's retinal directional selectivity? Visual Neuroscience. 13(3):423-39.
• Amthor FR. Grzywacz NM. Merwine DK. (1996). Extra-receptive-field motion facilitation in on-off directionally selective ganglion cells of the rabbit retina. Vis Neurosci.13:303-9.
• Merwine DK. Amthor FR Grzywacz NM. (1995). Interaction between center and surround in rabbit retinal ganglion cells. J Neurophysiol 73:1547-67.
• Grzywacz NM. Amthor FR. Merwine DK. (1994). Directional hyperacuity in ganglion cells of the rabbit retina. Vis. Neurosci. 11:1019-25.
• Grzywacz NM. Amthor FR. (1993). Facilitation in ON-OFF directionally selective ganglion cells of the rabbit retina. J. Neurophysiol. 69:2188-99.
• Amthor FR. Grzywacz NM. (1993). Inhibition in ON-OFF directionally selective ganglion cells of the rabbit retina. J. Neurophysiol. 69: 2174-87.
• Amthor FR. Grzywacz NM. (1993). Directional selectivity in vertebrate retinal ganglion cells. Rev. Oculomot. Res. 5:79-100.
• Grzywacz NM. Hillman P. Knight BW. (1992). The amplitudes of unit events in Limulus photoreceptors are modulated from an input that resembles the overall response. Biol. Cybern. 66:437-41.
• Grzywacz NM. Hillman P. Knight BW. (1992). Response transfer functions of Limulus ventral photoreceptors: interpretation in terms of transduction mechanisms. Biol. Cybern. 66:429-35.
• Amthor FR. Grzywacz NM. (1991). Nonlinearity of the inhibition underlying retinal directional selectivity. Vis. Neurosci. 6:197-206.
• Grzywacz NM. Amthor FR. Mistler LA. (1990). Applicability of quadratic and threshold models to motion discrimination in the rabbit retina. Biol. Cybern. 64:41-9.
• Grzywacz NM. Hillman P. Knight BW. (1988). The quantal source of area supralinearity of flash responses in Limulus photoreceptors. J. Gen. Physiol. 91:659-84.
• Grzywacz NM. Hillman P. (1988). Biophysical evidence that light adaptation in Limulus photoreceptors is due to a negative feedback. Biophys. J. 53:337-48.
• Grzywacz NM. Koch C. (1987). Functional properties of models for direction selectivity in the retina. Synapse, 1:417-34.
• Grzywacz NM. Hillman P. (1985). Statistical test of linearity of photoreceptor transduction process: Limulus passes, others fail. Proc Natl Acad Sci USA, 82: 232-5.

Development of Retinal Receptive Fields

• Lee, EJ, Mann LB, Rickman DW, Lim EJ, Chun MH, Grzywacz NM. (2006) AII Amacrine Cells in the Distal Inner Nuclear Layer of the Mouse Retina J. Comp. Neur. 494: 651-662.
• Lee EJ, Merwine DK, Mann L B, Grzywacz NM. (2005) Ganglion cell densities in normal and dark-reared turtle retinas Brain Research 1060. 40-46.
• Merwine DK. Nguyen LT. De Juan J. Grzywacz NM. (in press) Acetylcholine's roles in retinal development. Proceedings of the Conference of the Spanish Society of Histology.
• Lee EJ, Min DS, Lee MY, Chung JW, Chun MH, Oh SJ. Related Articles, Links Differential expression of phospholipase D1 in the developing retina. Eur J Neurosci. 2002 15:1006-12.
• Grzywacz NM. Sernagor E. (2000 Mar-Apr). Spontaneous activity in developing turtle retinal ganglion cells: statistical analysis. Visual Neuroscience, 17(2):229-241.
• Nguyen LT. Grzywacz NM. (2000 May 15). Colocalization of choline acetyltransferase and gamma-aminobutyric acid in the developing and adult turtle retinas. Journal of Comparative Neurology. 420(4):527-38.
• Nguyen LT. De Juan J. Mejia M. Grzywacz NM. (2000 May 15). Localization of choline acetyltransferase in the developing and adult turtle retinas. Journal of Comparative Neurology. 420(4):512-26.
• Sernagor E. Grzywacz NM. (1999 May 15). Spontaneous activity in developing turtle retinal ganglion cells: pharmacological studies. Journal of Neuroscience. 19(10):3874-87.
• Burgi PY. Grzywacz NM. (1998 Sep). A biophysical model for the developmental time course of retinal orientation selectivity. Vision Research. 38(18):2787-800.
• Grzywacz NM. Burgi PY. (1998 Apr 1). Toward a biophysically plausible bidirectional Hebbian rule. Neural Computation. 10(3):499-520.
• Burgi PY. Grzywacz NM. (1997 Apr 1). Possible roles of spontaneous waves and dendritic growth for retinal receptive field development.Neural Computation. 9(3):533-53.
• Sernagor E. Grzywacz NM. (1996 Nov 1). Influence of spontaneous activity and visual experience on developing retinal receptive fields. Current Biology. 6(11):1503-8.
• Sernagor E. Grzywacz NM. (1995). Emergence of complex receptive field properties of ganglion cells in the developing turtle retina. J Neurophysiol 73:1355-64.
• Burgi PY. Grzywacz NM. (1994). Model based on extracellular potassium for spontaneous synchronous activity in developing retinas. Neural Computation 6, 983-1004.
• Burgi PY. Grzywacz NM. (1994). Model for the pharmacological basis of spontaneous synchronous activity in developing retinas. J. Neurosci. 14:7426-39.

 

Optimization of Visual Computations

• Balboa RM. Grzywacz NM. (2003). Power Spectra and Distribution of Contrasts of Natural Images from Different Habitats. Vision Res. 43, 2527-2537.
• Grzywacz NM. De Juan J. (2003). Sensory Adaptation as Kalman Filtering: Theory and Illustration with Contrast Adaptation. Network: Comput. Neural Syst. 14, 465-482.
• Grzywacz NM. Balboa RM. Tyler CW. (2002). Reply to a Letter by Ruderman. Vision Research, 42:2803-2805.
• Grzywacz NM. Balboa RM. (2002). A bayesian framework for sensory adaptation. Neural Computation. 14, 543-59.
• Balboa RM. Tyler CW. Grzywacz NM. (2001). Occlusions contribute to scaling in natural images. Vision Research, 41(7):955-64.
• Balboa RM. Grzywacz NM. (2000). Occlusions and their relationship with the distribution of contrasts in natural images. Vision Research.40(19):2661-9.
• Balboa RM. Grzywacz NM. (2000 Jul). The minimal local-asperity hypothesis of early retinal lateral inhibition. Neural Computation.12(7):1485-517.
• Balboa RM. Grzywacz NM. (2000 Jan-Feb). The role of early retinal lateral inhibition: more than maximizing luminance information. Visual Neuroscience. 17(1):77-89.

 

Perception of Visual Motion

• Wurfel, J., Barraza, J.F., and N.M. Grzywacz (2005)Measurement of Rate of Expansion in the Perception of Radial Motion. Vision Res. 45, 2740-2751.
• Barraza JF. and Grzywacz NM. (2004). Parametric Measurements of Optic Flow. In Optic Flow and Beyond by Vaina LM. and Beardsley SA. and Rushton, SK. (Editors), Kluwer Academic Publishers, 249-271.
• Vaina LM. Grzywacz NM. Saiviroonporn P. LeMay M. Bienfang DC. Cowey A. (2003). Can spatial and temporal motion integration compensate for deficits in local motion mechanisms? Neuropsychologia. 41, 1817-1836.
• Barraza JF. Grzywacz NM. (2003). Local Computation of Angular Velocity in Rotational Visual Motion. Journal of the Optical Society of America, A, 20, 1382-1390.
• Grzywacz NM. Merwine DK. (2003). Neural Basis of Motion Perception. Encyclopedia of Cognitive Science, Vol. 3, 86-98. Macmillan Press, Cambridge, United Kingdom.
• Barraza, JF. Grywacz, NM. (2002). Measurement of angular velocity in the perception of rotation. Vision Research, 42:2457-2462.
• Barraza, JF. Grzywacz, NM. (2002). Temporal Coherence in Visual Rotation. Vision Research, 42:2463-2469.
• Barraza JF. Colombo EM. Barraza_Colombo_2002.pdf Vision Research, 41:1139-44, 2001.
• Ascher D. Grzywacz NM. (2000). A Bayesian model of temporal frequency masking. Vision Research. 40(16):2219-32.
• Verghese P. McKee SP. Grzywacz NM. (2000 Sep). Stimulus configuration determines the detectability of motion signals in noise. Journal of the Optical Society of America, A, Optics, Image Science, & Vision. 7(9):1525-34.
• Burgi PY. Yuille AL. Grzywacz NM. (2000 Aug). Probabilistic motion estimation based on temporal coherence. Neural Computation.12(8):1839-67.
• Ascher D. Grzywacz NM. (2000). A Bayesian model of temporal frequency masking. Vision Research. 40(16):2219-32.
• Verghese P. Watamaniuk SN. McKee SP. Grzywacz NM. (1999 Jan). Local motion detectors cannot account for the detectability of an extended trajectory in noise. Vision Research. 39(1):19-30.
• Yuille AL. Grzywacz NM. (1998). A Theoretical Framework for Visual Motion. High-Level Motion Processing-Computational, Neurbiological, and Psychophysical Perspectives, T. Watanabe (Ed.) 187-211. MIT Press, Cambridge, Massachusetts.
• Grzywacz NM. Watamaniuk SN. McKee SP. (1995). Temporal coherence theory for the detection and measurement of visual motion. Vision Res35: 3183-203.
• Watamaniuk SN. McKee SP. Grzywacz NM. (1995). Detecting a trajectory embedded in random-direction motion noise. Vision Res. 35:65-77.
• Vaina LM. Grzywacz NM. Kikinis R. (1994). Segregation of computations underlying perception of motion discontinuity and coherence. Neuroreport, 5: 2289-94.
• Watamaniuk SN. Grzywacz NM. Yuille AL. (1993). Dependence of speed and direction perception on cinematogram dot density. Vision Res. 33:849-59.
• Hildreth EC. Grzywacz NM. Adelson EH. Inada VK. (1990). The perceptual buildup of three-dimensional structure from motion. Percept. Psychophys. 48:19-36.
• Grzywacz NM. Yuille AL. (1990). A model for the estimate of local image velocity by cells in the visual cortex. Proc R Soc Lond B Biol Sci. 239:129-61.
• Yuille AL. Grzywacz NM. (1989). A computational theory for the perception of coherent visual motion. Nature, 333:71-4.
• Grzywacz NM. Yuille AL. (1988). Massively parallel implementations of theories for apparent motion. Spat. Vis. 3:15-44.
• Grzywacz NM. Hildreth EC. (1987). Incremental rigidity scheme for recovering structure from motion: position-based versus velocity-based formulations. J Opt Soc Am, A 4:503-18.