Help Privacy Policy Disclaimer
  Advanced SearchBrowse




Journal Article

Contrast sensitivity and retinal ganglion cell responses in the primate.


Lee,  B. B.
Emeritus Group of Membrane Biophysics, MPI for Biophysical Chemistry, Max Planck Society;

External Resource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in PuRe
Supplementary Material (public)
There is no public supplementary material available

Lee, B. B., & Sun, H. (2011). Contrast sensitivity and retinal ganglion cell responses in the primate. Psychology and Neuroscience, 4(1), 11-18. doi:10.3922/j.psns.2011.1.003.

Cite as: http://hdl.handle.net/11858/00-001M-0000-0025-78A2-3
Human contrast sensitivity is considered in relation to the responses delivered by retinal ganglion cells of the primate to luminance and chromatic contrast. At different temporal frequencies, response amplitude relative to response variability determines the limit to sensitivity of a single ganglion cell. This can be related to specific models of central detection mechanisms. Both for luminance and chromatic contrast, psychophysical sensitivity to temporal modulation can be achieved by summation of activity of just a few cells that provide input to a detection mechanism. This analysis is then extended to a spatial context. Several sets of data indicate that, in spatial terms, detection mechanisms are of limited spatial extent, and that, at least in the case of luminance patterns, eye movements play a critical role in contrast detection.