Browsing Cognitive & Neural Systems by Subject "Lateral geniculate nucleus"

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Browsing Cognitive & Neural Systems by Subject "Lateral geniculate nucleus"

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  • Przybyszewski, Andrezej; Pollen, Daniel (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 2000-06)
    Feedback from the visual cortex (Vl) to the Lateral Geniculate Nucleus (LGN) in macaque monkey increase contrast gain of LGN neurons for black and white (B&W) and for color (C) stimuli. LGN parvocellular cells responses ...
  • Gove, Alan; Grossberg, Stephen; Mingolla, Ennio (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1994-11)
    A neural network model is developed to explain how visual thalamocortical interactions give rise to boundary percepts such as illusory contours and surface percepts such as filled-in brightnesses. Top-down feedback ...
  • Przybyszewski, Andrzej W.; Rubin, Mark A. (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1998-05)
    Anatomical studies have documented massive back-projections from higher to lower visual cortices and to the lateral geniculate nucleus (LGN). The large number of synapses from these sources suggest that they should have a ...
  • Parsons, Olga; Rucci, Michele (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 2004-12)
    The second-order statistics of neural activity was examined in a model of the cat LGN and V1 during free-viewing of natural images. In the model, the specific patterns of thalamocortical activity required for a Bebbian ...
  • Baloch, Aijaz; Grossberg, Stephen; Mingolla, Ennio; Nogueira, C.A.M. (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1996-10)
    A neural model of motion perception simulates psychophysical data. concerning first-order and second-order motion stimuli, including the reversal of perceived motion direction with distance from the stimulus (I display), ...
  • Olson, Steven J.; Grossberg, Stephen (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1996-08)
    Prenatal development of the primary visual cortex leads to simple cells with spatially distinct and oriented ON and OFF subregions. These simple cells are organized into spatial maps of orientation and ocular dominance ...
  • Grossberg, Stephen; Grunewald, Alexander (Boston University Center for Adaptive Systems and Department of Cognitive and Neural Systems, 1999-06)
    A neural model is developed to probe how corticogeniculate feedback may contribute to the dynamics of binocular vision. Feedforward and feedback interactions among retinal, lateral geniculate, and cortical simple and complex ...

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