Fig. 6

ERSP maps and contract maps for each cluster of BAP and SSP. Time–frequency maps show the decrease (blue) and increase (red) in mean power for each condition. In the ERSP maps of BAP and SSP, the non-significant differences from quiet stance are partially masked with a white overlay. The contrast maps display the difference in power between BAP and SSP, the differences between − 1 and 1 dB are masked with a gray overlay. BAP: bone-anchored prosthesis group; SSP: socket-suspended prosthesis group; HsI: heel strike with the intact leg; HsP: heel strike with a prosthetic leg