Rothkegel et al. 20 0 2 4 6 8 10 0 2000 4000 time [ms] distance to image center [°] pre−trial fixation time [s] 0 0.125 0.25 4 5 6 7 500 1000 initial saccade latency [ms] distance to center on second fixation [°] pre−tr ial fixation time [s] 0 0.125 0.25 a b Figure 5 . Experiment 4. a) Mean distance to center over time ( DTC ( t )) for the three different pre-trial fixation times with starting positions in the center of the image. Confidence intervals indicate standard errors as described by Cousineau (2005). b) Mean distance to center of the second fixation as a result of initial saccade latency and pre-trial fixation time. Bins represent quintiles of the saccade latency distribution. Errorbars are the standard error of the mean. Results Distance to Center over Time . Contrary to the first experiments initial gaze positions could only move away from the image center with central starting positions in Experiment 4 (Fig. 5a). Therefore, DTC gradually increased until it reached an asymptote. Between pre-trial conditions, DTC differed with respect to the point in time, when curves started to monotonically increase (pre-trial fixation times: 250 ms < 125 ms < 0 ms). Although pre-trial fixation times were chosen to be equidistant, curves for 125 ms and 0 ms pre-trial conditions (red & black curve) converged later than curves for the 250 ms and 125 ms pre-trial conditions (green & red curve). This demonstrated that pre-trial fixation times of 125 ms or more reduces the CFB of early fixations even during scene viewing with central starting positions.