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Spatial coding of position and orientation in primary visual cortex.

Publication ,  Journal Article
Bosking, WH; Crowley, JC; Fitzpatrick, D
Published in: Nat Neurosci
September 2002

We examined the spatial distribution of population activity in primary visual cortex (V1) of tree shrews with optical imaging and electrophysiology. A line stimulus, thinner than the average V1 receptive field, evoked a broad strip of neural activity of nearly constant size for all stimulus locations tested within the central 10 degrees of visual space. Stimuli in adjacent positions activated highly overlapping populations of neurons; nevertheless, small changes in stimulus position produced orderly changes in the location of the peak of the population response. Statistically significant shifts in the population response were found for stimulus displacements an order of magnitude smaller than receptive field width, down to the limit of optical imaging resolution. Based on the pattern of population activity, we conclude that the map of visual space in V1 is orderly at a fine scale and has uniform coverage of position and orientation without local relationships in the mapping of these features.

Duke Scholars

Published In

Nat Neurosci

DOI

ISSN

1097-6256

Publication Date

September 2002

Volume

5

Issue

9

Start / End Page

874 / 882

Location

United States

Related Subject Headings

  • Visual Fields
  • Visual Cortex
  • Tupaia
  • Photic Stimulation
  • Pattern Recognition, Visual
  • Orientation
  • Neurons
  • Neurology & Neurosurgery
  • Neural Pathways
  • Nerve Net
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Bosking, W. H., Crowley, J. C., & Fitzpatrick, D. (2002). Spatial coding of position and orientation in primary visual cortex. Nat Neurosci, 5(9), 874–882. https://doi.org/10.1038/nn908
Bosking, William H., Justin C. Crowley, and David Fitzpatrick. “Spatial coding of position and orientation in primary visual cortex.Nat Neurosci 5, no. 9 (September 2002): 874–82. https://doi.org/10.1038/nn908.
Bosking WH, Crowley JC, Fitzpatrick D. Spatial coding of position and orientation in primary visual cortex. Nat Neurosci. 2002 Sep;5(9):874–82.
Bosking, William H., et al. “Spatial coding of position and orientation in primary visual cortex.Nat Neurosci, vol. 5, no. 9, Sept. 2002, pp. 874–82. Pubmed, doi:10.1038/nn908.
Bosking WH, Crowley JC, Fitzpatrick D. Spatial coding of position and orientation in primary visual cortex. Nat Neurosci. 2002 Sep;5(9):874–882.

Published In

Nat Neurosci

DOI

ISSN

1097-6256

Publication Date

September 2002

Volume

5

Issue

9

Start / End Page

874 / 882

Location

United States

Related Subject Headings

  • Visual Fields
  • Visual Cortex
  • Tupaia
  • Photic Stimulation
  • Pattern Recognition, Visual
  • Orientation
  • Neurons
  • Neurology & Neurosurgery
  • Neural Pathways
  • Nerve Net