Fig. 5: Correlation analysis of neural signal characteristics and walking performance.

A presents the relationship between changes in LFP signal power in the pallidal area and walking performance. Left and right sub-panels, in turn, show the relationship between the walking performance and the beta band power during the double limb support period after the contralateral leg swing and the ipsilateral leg swing, respectively. B exemplifies the comparison of the neural signal variations from the left brain hemisphere between the sessions with low and high WPI across all single gait cycles. B illustrates the beta band power of LFP signal power in the pallidal area. The heatmaps on the left and right correspond to the lowest and highest walking performance, respectively. Each row represents a single gait trial, sorted by stride time and initiated at the left heel strike. Orange dots denote the right toe-off, red dots indicate the right heel strike, and purple dots represent the left toe-off. All gait cycles conclude with the subsequent left heel strike. Middle sub-panels compare signal power during the specific gait phases of interest (i.e., double limb support period and ipsilateral leg swing in (B), contrasting sessions with the lowest WPI (shown in red boxplots) and the highest WPI (shown in green boxplots).