Fig. 3

Schematic diagram of the target-oriented stepping task. The stepping mat was placed 60 cm in front of the monitor. Participants stood on the marked area of the mat as the starting point. a: Participants performed the interactive target-oriented stepping task according to the cue on the television screen, with motion monitored by infrared photosensors in the controllers. b: Right foot was raised according to the cue on the monitor. c: Left foot was raised according to the cue on the monitor