Wiesel 1966

From neurov.is/on

Contents 1 Download 2 Notes 2.1 Dorsal layers 2.2 Ventral layers 3 Citation

[edit] Download

http://hubel.med.harvard.edu/papers/HubelWiesel1966Jneurophysiol.pdf

[edit] Notes

[edit] Dorsal layers

• 77% of the cells were "type I" (Table 1.)
  • characterized by
    • a receptive field with an antagonistic center-surround arrangement and
    • different spectral sensitivities.
  • Sub-types
    • 35% Red on-center, green off-surround
    • 18% Red off-center, green on-surround
    • 16% Green on-center, red off-surround
    • 6% Green off-center, red on-surround
    • 1% Blue on-center, green off-surround
  • From figure 4 - Spot diameters
    • Sensitivity for the on-response started around 1/8° and leveled off at about 1/2°.
    • Sensitivity for the off-response started around 1° and leveled off at about 6°.
• 7% of the cells were "type II"
  • characterized by
    • opponent-color responses
    • no-center response
  • receptive field diameter 1/2°, about 1° from fovea
  • Example from fig 7: Yellow on-center, blue off-center - white has no effect
• 16% of the cells were "type III"
  • not color-opponent
  • most had little to no response to diffuse light
  • periphery was color insensitive
• From figure 19 - Center diameters histogram
  • Type I Cells - 1/32 to 1/2°
  • Type II Cells - 1/8 to 1°
  • Type III Cells - 1/8 to 1°

[edit] Ventral layers

• Fell into 2 groups:
  • Type III cells - resembling the dorsal type III cells.
    • Center diameters ranged from 1/8 to 1/2°.
  • Type IV cells
    • Like other cells, where concentric with center and surround response
    • Some responses didn't have maintained response
    • No response for diffuse lighting in short and medium (violet-yellow) wavelengths
      • Red diffuse light caused maintained suppressed response
    • Responses to up to 20° and 25° of light.

[edit] Citation

The citation for this paper is:

Wiesel, Torsten N.; Hubel, David H. (1966). "Spatial and chromatic interactions in the lateral geniculate body of the rhesus monkey". Journal of neurophysiology 29 (6): 1115-1156. 

Edit Cite:Wiesel 1966 to modify the citation. For information on citing a paper, see Help:Citing.