Rothkegel et al. 16 Figure 4 . Summary statistics of saccade amplitudes. (a) Densities of all saccade amplitudes for the three images types of object-based scenes (balanced, left, and right focus) and the pattern images for left and right starting position. (b) Mean saccade amplitude for the n th saccade in each trial for all conditions. While there is a strong effect on the mean of the first saccade length, subsequent saccade amplitudes show no systematic pattern. (c) Mean values of the first saccade amplitude for the 8 different conditions. There is a strong interaction between the image type and the starting position especially for the left focus images and the right focus images. Errorbars represent the standard error of the mean. 0.00 0.03 0.06 0.09 0.12 0 10 20 30 Saccade Amplitude [°] Density Star t Left Right Ima g e Type Balanced P attern Left F ocus Right F ocus 7 9 11 1 2 3 4 nth Saccade during Trial Saccade Amplitude [°] Star t Left Right Imag e Type Balanced P atter n Left F ocus Right F ocus (a) (b) 6 8 10 12 Left Focus Balanced Pattern Right Focus Image Type First Saccade Amplitude [°] Star t Left Right (c)