Rothkegel et al. 34 early dip in DTC curves, qualitatively replicated differences in DTC curves between pre- trial fixation times, and replicated saccade latency effects on DTC of the second fixation. In particular for starting positions near the border of the screen, a central activation in the attention map was needed to qualitatively reproduce the initial CFB. However, the initial CFB generated by the SceneWalk StartMap model was too weak. The same was true for the Center Bias model. This suggests that the procedure to estimate the central bias from the second to fourth fixation underestimated the initial CFB. Incorporating a stronger bias might further improve predictions of the SceneWalk StartMap model. Fixations after about 2 s of exploration were distributed as if drawn from the distribution randomly. Later fixations were not directed towards the periphery more due to the initial CFB. Both SceneWalk models approached a similar DTC during the final viewing period, while the simpler Gaussian model stayed too near to the center. During scene viewing the eyes have a strong tendency to fixate near the center of an image which potentially masks other bottom-up and top-down effects of saccadic target selection. In a previous study (Rothkegel et al., 2016) with starting positions near the image border and an experimentally delayed first saccade after the onset of an image we observed a considerable reduction of the central fixation bias (CFB; Tatler, 2007). Here, we investigated this reduction in four scene viewing experiments. We manipulated starting positions and the latency of the initial saccade. Contrary to the original scene viewing paradigm, where participants started exploration immediately after image onset, we delayed the initial saccadic response by instructing participants to start exploration General Discussion