Figure 4
(A) Proportion of difficult decision choices as a function of motor difficulty. As in Fig. 3D, trials are sorted chronologically and normalized by grouping them in 5 quantiles. Because target size strongly co-varies with the number of completed trials (Fig. 3D), trial number is a proxy of the motor accuracy requirement, and thus motor difficulty. Light gray lines illustrate linear regressions through the data for each individual subject. The open dots show the median values for each trial quantile across the population. (B) Left panel: proportion of correct perceptual decisions as a function of motor difficulty, with trials sorted as a function of the difficulty of the perceptual decision (blue: easy; red: difficult). Right panel: perceptual decision duration as a function of motor difficulty, with trials sorted as a function of the difficulty of the perceptual decision (blue: easy; red: difficult). Same conventions as in Fig. 3D.
