Fig. 4From: Improved cortical activity and reduced gait asymmetry during poststroke self-paced walking rehabilitationThe ERD/ERS (active–passive) from the estimated clusters during a stride from all subjects for a the passive and b active walking trials at the slow walking speed and c passive and d active walking trials at the fast walking speed. The vertical lines in the ERSP plots indicate gait phase indices (RHO, LTO, LHS, and RTO)Back to article page