Fig. 5

(a) Brain region location diagram: Each color corresponds to a brain region, and the dots represent electrode positions. (b) Pearson correlations between polarized videos and differential entropy (DE) in EEG frequency bands: delta (0.5–4 Hz), theta (4–8 Hz), alpha (8–13 Hz), beta (13–30 Hz), and gamma (30–50 Hz) during the laboratory study. A white circle represents a significant correlation (p < 0.05) between DE features and content polarization. (c, d, e, f) The Pearson correlations of the opinion polarization with DE in frequency bands of delta, theta, alpha, beta, and gamma grouped by various factors in the lab study: c, valence (positive or negative mood); (d) arousal (high or low arousal mood); (e) like data (like or view without like); and (f) view ratio (proportion of video viewed, long or short).