Orientation Contrast Sensitivity from Long-Range Interactions in Visual Cortex

Klaus Pawelzik, Udo Ernst, Fred Wolf, Theo Geisel

NeurIPS 1996 pp. 90-96

/neurips/1996/pawelzik1996neurips-orientation/

Abstract

Recently Sill ito and coworkers (Nature 378, pp. 492,1995) demon(cid:173) strated that stimulation beyond the classical receptive field (cRF) can not only modulate, but radically change a neuron's response to oriented stimuli. They revealed that patch-suppressed cells when stimulated with contrasting orientations inside and outside their cRF can strongly respond to stimuli oriented orthogonal to their nominal preferred orientation. Here we analyze the emergence of such complex response patterns in a simple model of primary vi(cid:173) sual cortex. We show that the observed sensitivity for orientation contrast can be explained by a delicate interplay between local isotropic interactions and patchy long-range connectivity between distant iso-orientation domains. In particular we demonstrate that the observed properties might arise without specific connections be(cid:173) tween sites with cross-oriented cRFs.

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Cite

Text

Pawelzik et al. "Orientation Contrast Sensitivity from Long-Range Interactions in Visual Cortex." Neural Information Processing Systems, 1996.

Markdown

[Pawelzik et al. "Orientation Contrast Sensitivity from Long-Range Interactions in Visual Cortex." Neural Information Processing Systems, 1996.](https://mlanthology.org/neurips/1996/pawelzik1996neurips-orientation/)

BibTeX

@inproceedings{pawelzik1996neurips-orientation,
  title     = {{Orientation Contrast Sensitivity from Long-Range Interactions in Visual Cortex}},
  author    = {Pawelzik, Klaus and Ernst, Udo and Wolf, Fred and Geisel, Theo},
  booktitle = {Neural Information Processing Systems},
  year      = {1996},
  pages     = {90-96},
  url       = {https://mlanthology.org/neurips/1996/pawelzik1996neurips-orientation/}
}