Figure 3. The matching between the stimulus' kinematics and the internal models of action calibrates the temporal performance.

The colors code the stimulus kinematics (red-Bio, blue-NBio). (a) Arm performance of a typical subject. Velocity (m/s, y-axis) as function of time (ms, x-axis). At the top of each row is reported the duration of the stimuli displayed. Each curve drawn represents a single trial. In both B and C panels each row corresponds to participants' responses accuracy to one stimulus duration (top 400 ms, bottom 1900 ms). (b) Distributions of the accuracy computed from participants' responses fitted with Gaussian functions. Left and right columns refer to the tasks K and A, respectively. The x-axis reports the accuracy of all the duration of participants' responses (Bins equal to 15) whereas the y-axis indicates how many times the response occurs (frequency). (c) Proportion of one-shot movements. Each histogram represents the proportion of one-shot movements in correspondence to each stimulus duration and kinematics.