Figure 1

fMRI experimental design and stimuli. (A) Before the task session, participants performed an 8 min resting state scan without performing any cognitive, motor, or sensory task; (B) In the task session, participants performed a covert working memory one-back task detecting the repetition of images depicting four stimulus categories (human hands, robot hands, gloves, and food) randomly selected and presented. The task consists of five runs, each lasting four minutes. Each run began and ended with 20 s of rest and consisted of 12 blocks. Each block lasted 12 s, followed by 8 s of fixation, and included 20 randomized repetitions of the six category stimuli (each presented for 0.3 s and followed by fixation for 0.3 s); (C) Representative figures of videos and static images used for the experiment. (D) Following the resting state (A) and visual stimulation sessions (B), participants performed a 3-min finger tapping task to localize the somatomotor regions (blocks of 15 s of activity -blue circle- followed by 15 s of rest -red circle).