Fig. 6: The dynamics of the time-cumulative INS, trial-cumulative accuracy, and correlation results.

a The trial-cumulative accuracy during the COP in the success and failure groups under the experimental condition. b The time-cumulative INS at CH15 during COP in the success and failure groups under the experimental condition. Notably, the black vertical line with an asterisk in A and B indicates the earliest trial in which a significant difference between these two groups was found separately (Wilcoxon signed rank test, p < 0.05, FDR correction). c Dynamic correlations between the time-cumulative INS and trial-cumulative accuracy during the COP in the success and failure groups under the experimental condition. The red vertical line with one asterisk indicates the earliest trial that the correlations reached statistical significance in the success group (Spearman’s rank correlation, p < 0.05, FDR correction). INS interpersonal neural synchronization, COP coordination period. *p < 0.05.