Correlations between changes in connectivity values and in electrophysiological measures or well-being assessment after the intervention
As regard to the previous significant results, correlations between percentages of change of connectivity—from the DMN cluster, the SMN cluster and the four clusters of the NNCP—and the percentages of change of heart and respiratory rates and subjective well-being were evaluated. Only one correlation was significant, before adjustment for multiple analysis: there was a negative correlation between change of connectivity in the cluster 5 of the NNCP and change of the respiratory rate (Spearman correlation: p = 0.03 and rho = − 0.40). More the connectivity of the cluster 5 diminished, higher was the respiratory rate of the participants.