Gaze control is an important component of social communication, e.g. to direct someone's attention. While previous research on gaze interaction has mainly focused on the gaze recipient by asking how humans respond to perceived gaze (gaze cueing), we address the actor's point of view by asking how actors control their own eye movements to trigger a gaze response in others. Specifically, we investigate whether gaze responses of a (virtual) interaction partner are anticipated and thereby affect oculomotor control. Building on a pre-established paradigm for addressing anticipation-based motor control in non-social contexts, participants were instructed to alternately look at two faces on the screen, which consistently responded to the participant's gaze with either direct or averted gaze. We tested whether this gaze response of the targeted face is already anticipated prior to the participant's eye movement by displaying a task-irrelevant visual stimulus (prior to the execution of the target saccade), which was either congruent, incongruent, or unrelated to the subsequently perceived gaze. In addition to schematic and photographic faces, we included conditions involving changes in non-social objects. Overall, we observed congruency effects (as an indicator of anticipation of the virtual other's gaze response to one's own gaze) for both social and non-social stimuli, but only when the perceived changes were sufficiently salient. Temporal dynamics of the congruency effects were comparable for social and non-social stimuli, suggesting that similar mechanisms underlie anticipation-based oculomotor control. The results support recent theoretical claims emphasizing the role of anticipation-based action control in social interaction.
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