Simulation of Orientation Contrast Sensitive Cell Behavior in TiViPE
Many cells in the primary visual cortex respond differently when a stimulus is placed outside their classical receptive field (CRF) compared to the stimulus within the CRF alone, permitting integration of information at early levels in the visual processing stream that may play a key role in intermediate-level visual tasks, such a perceptual pop-out , contextual modulation [7,3,4], and junction detection [13,3,5]. In this paper we construct a computational model in programming environment TiViPE  of orientation contrast type of cells and demonstrate that the model closely resembles the functional behavior of the neuronal responses of non orientation (within the CRF) sensitive 4Cβ cells , and give an explanation of the indirect information flow in V1 that explains the behavior of orientation contrast sensitivity.
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- 4.Dragoi, V., Sur, M.: Dynamic properties of recurrent inhibition in primary visual cortex: Contrast and orientation dependece of contextual effects. Journal of Neurophysiology 83, 1019–1030 (2000)Google Scholar
- 6.Kandel, E.R., Schwartz, J.H., Jessell, T.M.: Principles of neural science, 4th edn. McGraw Hill, New York (2000)Google Scholar
- 7.Levitt, J.B., Lund, J.S.: Contrast dependence of contextual effects in primate visual cortex. Nature (1997)Google Scholar
- 9.Lourens, T.: Tivipe –tino’s visual programming environment. In: The 28th Annual International Computer Software & Applications Conference, IEEE COMPSAC 2004, pp. 10–15 (2004)Google Scholar
- 10.Morrone, M.C., Burr, D.C.: Feature detection in human vision: A phase-dependent energy model. Proc. of the Royal Society of London 235, 335–354 (1988)Google Scholar