Visual sensitivity and parallel retinocortical channels.

Visual sensitivity and neural mechanisms .................................................... 635 P (Parvocellular) and M (Magnocellular) Pathways. ..................................... 637 Contrast Gain in M and P Pathways ......................................................... 638 Three Photoreceptors and Spectral Sensitivity .............................................. 640 Color Exchange and lsoluminance ............................................................ 642 Responses of M and P Neurons to lsoluminant Stimuli ................................... 645 Chromatic Opponency in P and M Cells .................................................... 646 Modulation i Color Space ..................................................................... 648 Comparison of Achromatic and Chromatic Contrast Sensitivity ......................... 649 Possible Neural Substrates for Contrast Sensitivity ........................................ 651 Cortical Target Areas for P and M Signals ................................................. 652 Motion .............................................................................................. 653 Interactions between M and P Pathways .................................................... 654 Conclusions ........................................................................................ 655