Table 1.

Details on connectivity and evoked activity measures.

Measure	Formula	Details
Pearson’s correlation	$\rho (X,Y)=\frac{cov(X,Y)}{\sigma (X)\sigma (Y)}$	With covariance cov and standard deviation σ.
Mutual information	MI(X,Y) = H(X) + H(Y) − H(X,Y)	With entropy H.
Weighted phase lag index	$wPLI=\frac{\left|imag\left(S_{xy}\right)\right|sgn\left(imag\left(S_{xy}\right)\right)}{\left|imag\left(S_{xy}\right)\right|}$	With cross power spectral density Sxy.
Coherence	$C_{xy}(\omega )=\frac{{\left|S_{xy}(\omega )\right|}^2}{S_{xx}(\omega )S_{yy}(\omega )}$	With the spectral densities Sxx, Syy and Sxy.
Phase locking value	PLV(t) = |E[ejΔφ(t)]|	With the expected value E and the relative phase φ.
Root mean square	$RMS=\sqrt{\frac{1}{n}\sum _i^n{X}_i^2}$	With the time data series X.