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Innervation patterns of single physiologically identified geniculocortical axons in the striate cortex of the tree shrew.

Publication ,  Journal Article
Fitzpatrick, D; Raczkowski, D
Published in: Proc Natl Acad Sci U S A
January 1990

We examined the termination patterns of single geniculocortical axons in the striate cortex of the tree shrew by using intracellular recording and horseradish peroxidase staining methods. Axons were classified by whether they responded to light onset (ON center) or light offset (OFF center) and whether they were driven by the ipsi- or contralateral eye. Afferents with ON-center responses end in the upper part of layer IV (IVa) whereas afferents with OFF-center responses end in the lower part of layer IV (IVb). Within each tier, axons driven by the ipsilateral and contralateral eye overlap. These results suggest that binocular convergence occurs within layer IV without mixing the information from the ON- and OFF-center pathways and we consider the significance of this arrangement for visual cortical function.

Duke Scholars

Published In

Proc Natl Acad Sci U S A

DOI

ISSN

0027-8424

Publication Date

January 1990

Volume

87

Issue

1

Start / End Page

449 / 453

Location

United States

Related Subject Headings

  • Visual Cortex
  • Tupaiidae
  • Horseradish Peroxidase
  • Geniculate Bodies
  • Axons
  • Axonal Transport
  • Animals
  • Afferent Pathways
 

Citation

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Fitzpatrick, D., & Raczkowski, D. (1990). Innervation patterns of single physiologically identified geniculocortical axons in the striate cortex of the tree shrew. Proc Natl Acad Sci U S A, 87(1), 449–453. https://doi.org/10.1073/pnas.87.1.449
Fitzpatrick, D., and D. Raczkowski. “Innervation patterns of single physiologically identified geniculocortical axons in the striate cortex of the tree shrew.Proc Natl Acad Sci U S A 87, no. 1 (January 1990): 449–53. https://doi.org/10.1073/pnas.87.1.449.
Fitzpatrick, D., and D. Raczkowski. “Innervation patterns of single physiologically identified geniculocortical axons in the striate cortex of the tree shrew.Proc Natl Acad Sci U S A, vol. 87, no. 1, Jan. 1990, pp. 449–53. Pubmed, doi:10.1073/pnas.87.1.449.
Fitzpatrick D, Raczkowski D. Innervation patterns of single physiologically identified geniculocortical axons in the striate cortex of the tree shrew. Proc Natl Acad Sci U S A. 1990 Jan;87(1):449–453.
Journal cover image

Published In

Proc Natl Acad Sci U S A

DOI

ISSN

0027-8424

Publication Date

January 1990

Volume

87

Issue

1

Start / End Page

449 / 453

Location

United States

Related Subject Headings

  • Visual Cortex
  • Tupaiidae
  • Horseradish Peroxidase
  • Geniculate Bodies
  • Axons
  • Axonal Transport
  • Animals
  • Afferent Pathways