Figure 7.

Bland-Altman plots of α vs. its multiple-linear-regression-based combination of surrogates $\widehat{\alpha }$ (Welch-periodogram approach, first column), of $\overline{\alpha }$ vs. its multiple-linear-regression-based combination of surrogates $\widehat{\overline{\alpha }}$ (time-frequency approach, second column), and of ${\overline{\alpha }}^{\gamma }$ vs. its multiple-linear-regression-based combination of surrogates ${\widehat{\overline{\alpha }}}^{\gamma }$ (time-frequency coherence approach, third column). Note that scales are not the same for LF band (first row) than for HF band (second row).