Figure 1. Illustration of the experimental setting.

The target stimuli (letters) could be located in either of the boxes as illustrated in the top rows. Letter A required a reaction of the left hand (respective box and limbs edged green) while letter B required a reaction of the right hand (respective box and limbs edged red). The parallel hands condition is depicted in the bottom left part of the figure while the crossed hand condition is depicted on the right side.