Fig. 1.

Experimental paradigm. Shown is the sequence of stimuli presented throughout the experiment. Subjects were instructed to fixate on a gray fixation cross. After a variable interval, the cross turned into blue or red (colored cue). Blue cues preceded index finger movements, whereas red cues preceded little finger movements. Every 5 trials, learning of the visuovisual contingency was assessed through a recognition test consisting of showing 1 of the colored cues with 2 static images corresponding to each movement (learning assessment). Subjects responded by pressing 1 of 2 spatially congruent buttons.