Figure 1
From: Visual-reward driven changes of movement during action execution
(A,B) Both baseline and change of movement trials started with the presentation of a blank screen during 500 ms. Next, a circular, pale blue origin cue (1 cm diameter circle) was presented on the bottom right of the screen. One cycle (~ 10 ms) after the end-point entered the origin cue, the cue changed to green and the rectangular target (10 cm long, 1 cm wide) was presented on the top left of the screen, 15 cm away from the center of the origin cue and rotated 135°. Simultaneously, the distribution of visual reward was presented in the form of two right-angled triangles, centered in the middle of the length of the rectangle and peaking on either side. One of three possible distributions was presented: 1–5, 3–3 or 5–1. The GO signal was given 100 ms after the presentation of the distribution, by turning the origin cue white (the background color). On CoM trials, some time post-movement onset, a second distribution of visual reward was presented for a 250 ms duration. Upon arrival at the target, the rectangle color went from blue to green to signal correct entry. A red, horizontal bar provided visual feedback related to arrival precision and its length was proportional to greater reward (and therefore increased precision). (C) Geometrical arrangements, associated to the distributions of visual reward, used in this experiment: each DoVR always appeared on top of the rectangular target. One of three possible distributions was presented: 3–3, 1–5, 5–1, shown from left to right respectively.
