Decoding action, intention, and accuracy before and after the actual key press. A–C, For seen trials only, the figure shows the time course of decoding the actual response (A), the required response (B), and the accuracy (C) relative to actual key-press. The curves were realigned on motor onset and an average measure of decoding success (AUC) was computed across subjects. Gray bars below graphs indicate for each time point the number of subjects presenting an above-chance classification score at that instant, as computed by cluster analysis.