Skip to main content

Maps of central visual space in ferret V1 and V2 lack matching inputs from the two eyes.

Publication ,  Journal Article
White, LE; Bosking, WH; Williams, SM; Fitzpatrick, D
Published in: J Neurosci
August 15, 1999

In the visual cortex, the representation of central visual space is supplied by matching geniculate inputs that are driven exclusively by one eye or the other. In layer 4 of early visual areas (V1 in primates and V1 and V2 in cat), these inputs form a nearly uniform array of small ocular dominance domains, while preserving overall topographic order within the cortical map. In ferret, however, ocular dominance domains in different regions of the visual cortex are strikingly irregular in size and shape. The exceptionally large size of domains in some regions implies a departure from the usual visuotopic matching of inputs from the two eyes. Using optical-imaging, electrophysiological, and anatomical techniques, we show that this regional variation is attributable to exclusively monocular maps of the central portions of the ipsilateral visual field in V1 and the contralateral visual field in V2. In addition, we document a complex interdigitation of V1 and V2 that entails a discontinuity in the mapping of visual space and fragmentation of V2 into isolated cortical territories. We suggest that both the monocularity of these cortical maps and the visuotopic discontinuity along the V1-V2 border derive from asymmetries in the crossed and uncrossed retinal pathways.

Duke Scholars

Published In

J Neurosci

DOI

EISSN

1529-2401

Publication Date

August 15, 1999

Volume

19

Issue

16

Start / End Page

7089 / 7099

Location

United States

Related Subject Headings

  • Visual Pathways
  • Visual Cortex
  • Vision, Monocular
  • Video Recording
  • Ocular Physiological Phenomena
  • Neurology & Neurosurgery
  • Functional Laterality
  • Ferrets
  • Dominance, Cerebral
  • Brain Mapping
 

Citation

APA
Chicago
ICMJE
MLA
NLM
White, L. E., Bosking, W. H., Williams, S. M., & Fitzpatrick, D. (1999). Maps of central visual space in ferret V1 and V2 lack matching inputs from the two eyes. J Neurosci, 19(16), 7089–7099. https://doi.org/10.1523/JNEUROSCI.19-16-07089.1999
White, L. E., W. H. Bosking, S. M. Williams, and D. Fitzpatrick. “Maps of central visual space in ferret V1 and V2 lack matching inputs from the two eyes.J Neurosci 19, no. 16 (August 15, 1999): 7089–99. https://doi.org/10.1523/JNEUROSCI.19-16-07089.1999.
White LE, Bosking WH, Williams SM, Fitzpatrick D. Maps of central visual space in ferret V1 and V2 lack matching inputs from the two eyes. J Neurosci. 1999 Aug 15;19(16):7089–99.
White, L. E., et al. “Maps of central visual space in ferret V1 and V2 lack matching inputs from the two eyes.J Neurosci, vol. 19, no. 16, Aug. 1999, pp. 7089–99. Pubmed, doi:10.1523/JNEUROSCI.19-16-07089.1999.
White LE, Bosking WH, Williams SM, Fitzpatrick D. Maps of central visual space in ferret V1 and V2 lack matching inputs from the two eyes. J Neurosci. 1999 Aug 15;19(16):7089–7099.

Published In

J Neurosci

DOI

EISSN

1529-2401

Publication Date

August 15, 1999

Volume

19

Issue

16

Start / End Page

7089 / 7099

Location

United States

Related Subject Headings

  • Visual Pathways
  • Visual Cortex
  • Vision, Monocular
  • Video Recording
  • Ocular Physiological Phenomena
  • Neurology & Neurosurgery
  • Functional Laterality
  • Ferrets
  • Dominance, Cerebral
  • Brain Mapping