The Effect of The Five-Session Dual-tDCS On Lower-Limb Performance in Sub-Acute Stroke

Inclusion Criteria: * Age range 20-75 years * First ever-ischemic lesion in the territory of middle cerebral artery or anterior cerebral artery. Diagnostic confirmation will be performed by CT scan or MRI * Sub-acute onset (1-6 months after the stroke onset) * Able to walk without physical assistance at least 6 meters Exclusion Criteria: * All subjects will be excluded from the study if they have: * Not cooperative or cannot understand the instruction * Clinical unstable such as vital sign unstable (systolic blood pressure (SBP) ≥ 185 mmHg or diastolic blood pressure (DBP) ≥ 110 mmHg (98) and resting heart rate averaging ≥ 100 bpm (99)) * No clear neurological antecedent history or psychiatric disorder * Moderate pain in any joint of both lower limb (Pain Scale (VAS) ≥ 4/10) * Unstable medical conditions such as being in the middle of changing medical treatment. * Condition that may increase the risk of stimulation such as epilepsy, pregnancy, unexplained headaches, intracranial metal, pacemaker (evaluating by subjective examination). * Participate in the other protocol or receive alternative treatment such as transcranial magnetic stimulation within 1 month.