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. Author manuscript; available in PMC: 2010 Apr 1.
Published in final edited form as: Vision Res. 2008 Jul 22;49(9):1017–1031. doi: 10.1016/j.visres.2008.04.032

Figure 2.

Figure 2

Perceptual judgments of Gabor orientation as a function of Gabor contrast during counting, looking and steady fixation. Proportion correct orientation identifications (tilt left vs. tilt right) are shown for each subject and for the 4 conditions tested: FIX: steady fixation baseline. FIX/COUNT: Counting during steady fixation. SAC: Saccades only with no counting. SAC/COUNT: Counting with saccades. Data are fit with Weibull functions using the Psignifit algorithm (Wichman & Hill, 2001). Psychometric functions are based on 50–200 observations/point.