Fig. 4.

Experiment setup to evaluate tactile processing (Experiment 6). Temporal order judgment (TOJ) task. Pairs of tactile stimuli were delivered at various interstimulus intervals (one to each index finger). The onset of a visual cue at fixation informed the participant that a pair of stimuli was imminent. The participants responded by lifting their toes off of a footpedal under their left or right foot to indicate the perceived side of the first stimulus. Note that a sham vibrator was fixed to the rubber hand. White noise was delivered through the headphones to conceal any noise made by the vibrators.