Cascaded Intracortical Inhibition: Modeling Connection Schemes on a Large Scale Simulator
Receptive field properties of simple cells in the primary visual cortex arise partly from the connection structure of the input paths from the LGN and within the visual cortex. We briefly present our modeling setup used to study various connection schemes, such as spatially opponent inhibition. In spite of its ability to explain certain receptive field properties, severe conceptual difficulties are associated with the biological implementation of the model. We introduce a new cascade-like connection scheme, which largely overcomes these problems and produces more realistic simulation results.
KeywordsHexagonal Retina Convolution
Unable to display preview. Download preview PDF.
- D. Brettle, E. Niebur, A Detailed Simulator of a Biological Neural Network Implemented on a Massively Parallel Supercomputer, submittedGoogle Scholar
- F. Wörgötter, C. Koch, A Detailed Model of the Primary Visual Pathway in the Cat: Comparison of Afferent Excitatory and Intracortical Inhibitory Connection Schemes for Orientation Selectivity. J. of Neuroscience 11(7), 1959–1979 (1991)Google Scholar
- D.H. Hubel, T.N. Wiesel. Receptive fields, binoocular interaction and functional architecture in the cat’s visual cortex. J. Physiol. (Lond) 160: 106–154 (1962)Google Scholar
- D. Ferster, Spatially Opponent Excitation and Inhibition in Simple Cells of the Cat Visual Cortex. J. of Neuroscience 8(4), 1172–1180 (1988)Google Scholar