Figure 7.
Changes in long-range temporal correlation (LRTC), quantified using the Hurst parameter, in high density EEG data recorded after compared with before the therapy program. Averaging over the beta frequency range at which power decreased post-therapy in the BCI-FES group (15–23 Hz) and over time, LRTC decreased only in the BCI-FES group (paired T-tests, BCI-FES: T = − 3.38, p = 0.043. Random-FES: T = 0.19, p = 0.86). (A,B) Significance of the pre- to post-treatment LRTC difference over frequency and time based on pairwise T-tests. (A) BCI-FES group. (B) Random-FES group. (C,D) Changes in Hurst parameter in individual patients. Green: BCI-FES group; Blue: Random-FES group; Solid lines: significant difference on T-test in this group and frequency; Dashed lines: difference not significant (C) At beta (18 Hz). (D) At alpha (9 Hz).