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. Author manuscript; available in PMC: 2018 Sep 24.
Published in final edited form as: Annu Rev Vis Sci. 2018 Jun 8;4:123–141. doi: 10.1146/annurev-vision-091517-034055

Figure 4:

Figure 4:

Perceptual cancelation of rod and cone signals in mesopic vision (modified from Stockman and Sharpe (2006); see also MacLeod (1972)). A. The stimulus consists of a high-contrast flickering yellow spot superimposed on a large blue background. B. Detectability of the flicker in the yellow spot as a function of both spot (y-axis) and background (x-axis) intensity. Hashed regions show combinations of spot and background intensity for which flicker is invisible. C. Mean spike response in an On Parasol RGC to rod and cone flicker, presented individually and simultaneously.