Figure 1.

Task illustration (A–F), timeline and fixation windows. A, The monkey and the agent are passively leaning their right hand on the table. B, The monkey is cued to fixate on a space window corresponding to the agent's face (face window). C, The agent is cued to shift his gaze toward the target. D, The monkey is cued to fixate on the space window corresponding to the target object (target window). E, The agent is cued to grasp the object at the location where the monkey is fixating. F, The monkey receives a liquid reward if he fixates for at least one second on each of the windows. The red squares indicate in which fixation window (face window or target window) the monkey was required to fixate. Note: the figure illustrates a contralateral grasping with congruent gaze.