Fig. 7: Precuneus Unifies Fragmented Predictions into Global Experience.

a Neural transitions analysis applied on the Precuneus and PFC regions included transitions linked with periods of heightened Arousal, a measure of global experience. Arousal shifts was captured much more than each of the belief updates. PFC regions do not capture Arousal more than their specialised domains. b Correlation between Arousal and Group-averaged ISC time-courses showing Precuneus having larger correlations (r = 0.75) than dmPFC (r = 0.22), vmPFC (r = 0.58) and amPFC (r = 0.60) (r-values shown uncorrected for multiple comparisons). c Correlation between Arousal and participant-level ISC time-courses (n = 111). Precuneus had more correlation than each of the PFC subregions. Error bars denote the standard error of the mean. d Relation between PFC-PCN coupling during updates and shared neural responses in the Precuneus. Scatterplot shows average functional connectivity between PFC and the Precuneus (integration of prefrontal predictions across all domains), during updates along y-axis, correlated (Pearson) with the whole-movie Precuneus ISC (movie shared experience) along x-axis during (top) update time points and (bottom) nonupdate time points f. Dots represent individual participants. Shaded bands denote the 95% confidence interval of the fitted linear model.