Visual brain and visual perception: How does the cortex do perceptual grouping?

Author(s): Grossberg, S. | Mingolla, E. | Ross, W.D. |

Year: 1997

Citation: Trends in Neurosciences, 20, 106-111

Abstract: How the brain generates visual percepts is a central problem in neuroscience. We propose a detailed neural model of how lateral geniculate nuclei and the interblob cortical stream through V1 and V2 generate context-sensitive perceptual groupings from visual inputs. The model suggests a functional role for cortical layers, columns, maps and networks, and proposes homologous circuits for V1 and V2 with larger-scale processing in V2. An integrated treatment of interlaminar, horizontal, orientational and endstopping cortical interactions and a role for corticogeniculate feedback in grouping are proposed. Modeled circuits simulate parametric psychophysical data about boundary grouping and illusory contour formation.

Topics: Biological Vision, Models: Boundary Contour System,

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