Fig. 2

Experimental paradigm of Experiment 2. Panel A shows human and clock hand stimuli pairs employed in Experiment 2. Panel B shows an example of an experimental trial with human hand stimuli (45°−225° rotation). Panel C shows an example of an experimental trial with clock hand stimuli (45°−225° rotation). Each trial began with a 500 ms fixation cross, followed by the prime consisting of the forward mask (71 ms), the prime Fig. (43 ms), and the backward mask (71 ms). Then, the two static photographs (100 ms duration) appeared separated by a 300 ms inter-stimulus-interval. Then, the fixation cross reappeared, and the subject responded with the right hand, indicating the perceived direction of the rotation (clockwise – right arrow – or counterclockwise – left arrow).