Fixation Density Plots from Multiple Scanpath Simulations.

<p>This shows the effect of lesion condition and bisection task bias on line scanning & bisection. Results come from 10 independent scanpath simulations for each condition. The density of fixations at each horizontal position across the scene is plotted in 1° bins. Note that, in order to clearly show each plot, sub-figures are plotted to the scale dictated by the Y axis maximum and this varies between plots. The control condition is shown in row (a), V1 lesion in row (b), parietal step-function lesion model in row (c) and parietal gradient lesion model in row (d). As in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0054919#pone-0054919-g009" target="_blank">figure 9</a>, the bisection bias was systematically increased here such that it is set to 3 in the leftmost column, 4 in the second column, 4.5 in the third and 5 in the final column. Fixations that landed more than 1° away from the line in the vertical direction are excluded. This only affected parietal lesion simulations where fixations were eliminated when they went off the line towards the edge of the scene. The number of simulations in which this occurred is given in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0054919#pone-0054919-t001" target="_blank">table 1</a>.