21 Influence of initial fixation position between image type and starting position is visible in Figure 6a. When observers started in the interesting side of an image, the final MHD to the starting position is smaller than for the balanced and pattern images and for the balanced and pattern images it is smaller than if participants started on the less salient image side. Graphs are cut off at t = 6000 ms because after approximately 5 seconds the MHD reaches a stable value. Finally, we investigated the statistical reliability of our results via bootstrapping from 1 000 bootstrap samples of the 28 participants (Efron & Tibshirani, 1994). The confidence intervals (Fig. 6b,c) for the MHD curves X$_{MHD}$ ( t ) were obtained by subtracting the subject mean and adding the overall mean to the samples as described by Cousineau (Cousineau, 2005; Loftus & Masson, 1994) and taking the 2.5% and 97.5% quantile of the MHD samples for the lower and upper bound. Confidence intervals show that MHD of left and right focus images differ for both starting positions significantly from the balanced images. Pattern images show almost the same MHD as balanced images. The analysis of the time-dependence of the mean horizontal distance to the starting posi- tion uncovered at least two unexpected results, (i) the observation of long transients and (ii) an overshoot component to the image side opposite to the starting position, even in the case of balanced images. To interpret the experimental findings we calculated the same statistics for computer-generated scanpaths from two statistical models, a saccadic mo- mentum model and a dynamical model of scene exploration (see Methods ) and compared them to the experimental data. To illustrate model simulations we compare computer-generated scanpaths with experi- mental data. Figure 7a-f shows one scanpath for the experimental data and each of the Comparison of experimental data with model simulations for scanpath statistics