Complex task training may be more effective than simple task training in promoting functional recovery and brain restructuring in stroke participants. The researchers intend to investigate the real-time changes in plantar pressure and electroencephalographic signals in stroke participants during two complex tasks: pedal walking and visual-deprivation walking. The research hypothesis is that pedal walking and visual-deprivation walking can improve the difference of plantar pressure between the affected and unaffected lower limbs of stroke participants, and cause corresponding electroencephalographic changes.

Stroke participants perform the following tasks after wearing a plantar pressure device and a 32-lead electroencephalographic cap. First, stroke participants walk on the pedal on the lower limbs of the affected side. Then the researchers cover the participants' eyes with an eye mask, the participants perform the task of visual-deprivation walking. Finally, the participants walk on a flat surface. Each walking task lasts for 60 seconds. The participants can rest for 3-5 minutes between tasks.

Inclusion Criteria:

• MRI or CT diagnosis of the first stroke onset；
• The onset of the stroke occurred more than 30 days;
• Safely walk 50 meters without assistance.

Exclusion Criteria:

• Cerebellar injury；
• Brain stem injury；
• Visual impairment.

Stroke participants recruited from inpatient and outpatient departments of tertiary hospitals.