Figure 2
Suppression zone width as a function of spatial frequency. The solid black line is the mean values across all eight subjects. The other lines represent the size of the single, double, or triple full cycle of the DoG stimuli. The mean values are almost two full cycles of the DoG at low spatial frequencies but three full cycles at higher frequencies. The vertical error bar represents the standard error. The lower left panel illustrates the separation between the center to center of the two DoG at one, two, or three full cycles.
