Figure 6. Proximity Index and its relation to movie content.

(A) From top to down: In red, the average proximity index (PI) from 166 children with autism spectrum disorder (ASD) over time frames. Red-shaded regions denote a 95% confidence interval of the mean, gray-shaded regions mark the moments of the significant drop in mean values of the PI (below 2.5 SD compared to the theoretical mean of 1); Dark blue: Visual complexity over time frames; Green: Social complexity over time frames; the last panel denotes moments of the movie with the monologue, directed speech, frame switching, or moments involving moving background. (B) PLS-C illustration with PI on the A side and on the B side: Visual complexity, Social Complexity, Monologue, Directed Speech, Frame switch, Moving background and graph-based visual saliency (GBVS), the salience model derived receiver operating characteristic curve (ROC) scores for children with ASD (average ROC framewise). Positive correlation between the Proximity Index and was found between the Proximity Index and monologue, frame switch, moving background and also visual salience. PI negatively correlated with the social and visual complexity, as well as directed speech. Error bars represent the bootstrapping 5th to 95th percentiles.