Fig. 2
Top: Similarity of gaze by context condition across the shared viewing period of the clip. Gaze similarity is expressed as a z-score probability relative to the Context condition. (Context [blue], No-context [orange], and shuffled baseline [black]). Large values indicate greater gaze similarity. Bottom: Three of the peaks in gaze similarity are illustrated by image frames with superimposed heat maps of participant gaze location. The frames show the gaze heat maps at the points indicated on the gaze similarity figure for both the Context and No-context conditions. Frames a and c show high gaze similarity, while frame b shows low gaze similarity. Note that frame c was the single highest level of attentional synchrony in the entire film clip. Gaze heatmaps produced by CARPE (Computational and Algorithmic Representation and Processing of Eye-movements; Mital et al., 2010)