Figure 8

Dependence of each diffusion model parameter on contrast and SAT. We fit each combination of contrast and SAT level (except for the “extremely fast” SAT condition) with the diffusion model independently from all other conditions. We then examined how each parameter of the diffusion model depends on contrast and SAT. We found that contrary to the diffusion model predictions, all parameters changed with both contrast and SAT levels. All notation is identical to Fig. 3.