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was too close to the center. The bad performance of the Gaussian model demonstrated that a second mechanism is needed to move fixations away from the current fixation location. In the SceneWalk model this is implemented by inhibitory tagging via the fixation map (c.f., Rothkegel et al., 2016). The initial decline of DTC of the Center Bias model was weaker and slower than observed in our experiments (Exp. 1–3). This indicated that the CFB on the second fixation was stronger than estimated from Fixation 2–4. The inlays in Figure 8 show the overall deviation of model curves from the empirical data. The SceneWalk StartMap outperformed other models and deviated the least in all four 

