Figure 6

Effects of Attention upon delay as a Function of Eccentricity. (A) Experiment 1. There were no significant differences in the time to peak response (delay) for white or yellow stimuli, however yellow stimuli trended towards reduced delay (negative effects). (B) For the mixed effects models the white stimuli were faster for the inner ring around the central attentional task (mean eccentricity 3.8 degrees). Yellow stimuli were significantly quicker at 8 to 12 degrees eccentricity. (C) For the mixed effects models the yellow stimuli had significantly less delayed responses at 3.5, 8 and 18 degrees eccentricity. Interestingly the effects of centrally directed attention ran in the opposite direction to those for sensitivity (Fig. 5), with yellow stimuli showing larger effects than blue or white.