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Distortions of visuotopic map match orientation singularities in primary visual cortex

Author

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  • Aniruddha Das

    (The Rockefeller University)

  • Charles D. Gilbert

    (The Rockefeller University)

Abstract

The map of orientation columns in primary visual cortex (V1) is known to show strong local distortions, with a generally smooth progression of orientation preference across extended regions of cortex, interrupted by sharp jumps (fractures) and point singularities1,2,3,4. The map of visual space on V1, in contrast, has been assumed to be locally smooth and isotropic. We find, on the contrary, that the map of visual space on cat V1 shows strong and systematic local distortions in register with inhomogeneities in the orientation map, with the rate of receptive field movement across cortex being largely proportional to the local rate of change of orientation. This suggests possible systematic local variations in the functional connectivity of short-range lateral connections that underlie local cortical processing.

Suggested Citation

  • Aniruddha Das & Charles D. Gilbert, 1997. "Distortions of visuotopic map match orientation singularities in primary visual cortex," Nature, Nature, vol. 387(6633), pages 594-598, June.
  • Handle: RePEc:nat:nature:v:387:y:1997:i:6633:d:10.1038_42461
    DOI: 10.1038/42461
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    Cited by:

    1. Sohrab Najafian & Erin Koch & Kai Lun Teh & Jianzhong Jin & Hamed Rahimi-Nasrabadi & Qasim Zaidi & Jens Kremkow & Jose-Manuel Alonso, 2022. "A theory of cortical map formation in the visual brain," Nature Communications, Nature, vol. 13(1), pages 1-20, December.
    2. Lars Reichl & Dominik Heide & Siegrid Löwel & Justin C Crowley & Matthias Kaschube & Fred Wolf, 2012. "Coordinated Optimization of Visual Cortical Maps (II) Numerical Studies," PLOS Computational Biology, Public Library of Science, vol. 8(11), pages 1-26, November.
    3. Zvi N. Roth & Kendrick Kay & Elisha P. Merriam, 2022. "Natural scene sampling reveals reliable coarse-scale orientation tuning in human V1," Nature Communications, Nature, vol. 13(1), pages 1-13, December.
    4. Lars Reichl & Dominik Heide & Siegrid Löwel & Justin C Crowley & Matthias Kaschube & Fred Wolf, 2012. "Coordinated Optimization of Visual Cortical Maps (I) Symmetry-based Analysis," PLOS Computational Biology, Public Library of Science, vol. 8(11), pages 1-24, November.

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