Hafed & Krauzlis, Action for Perception Action for perception: evidence that ongoing eye movements constrain visual perception

Our results from Figures 1-5 of the main text suggest that eye movement information increases perceptual coherence. Before proceeding to the next set of experiments, we wished to first explore a possible hypothesis about how such an increase happens. Specifically, we hypothesized that eye movement direction may exhibit differential benefits to perceptual coherence depending on how effectively this direction could be used to resolve the ambiguity of the retinal motions associated with the visible segments of the perceived shape. For example, with the chevron stimulus of Figure 1 of the main text, the use of vertical apertures means that only the vertical component of this stimulus’ visible retinal motions is unambiguous. It is therefore possible that tracking improves coherence through constraining the ambiguous (horizontal) component.