Inclusion Criteria for TD children:  between the age of 7 and 18 years who are typically developing able to stand and walk alone without using assistance or assistive devices able to place their feet flat on the force platforms with enough German language skills to follow the instructions  Inclusion Criteria for sCP children:  between the age of 7 and 18 years with the diagnosis of spastic CP or CP similar (both unilateral and bilateral), functionally classified level I or II according to the Gross Motor Function Classification System (GMFCS) being able to stand and walk alone without assistance or assistive devices able to place their feet flat on the force platforms with enough German language skills to follow the instructions  Exclusion Criteria for TD children:  severe visual, cognitive, or auditory impairments that would interfere with the study instructions and the VR immersion any vestibular problems (e.g. severe motion sickness) history of epilepsy, pace-marker or/and electrical pumps (due to possible interference with electrical stimulation) prior experience of VR to ensure a comparable baseline between subjects  Exclusion Criteria for sCP children:  severe visual, cognitive, or auditory impairments that would interfere with the study instructions and the VR immersion severe knee flexion gait (>45°) walking capacity <50m botulinum toxin type A treatment (past 6 months) orthopedic surgery of upper or lower extremities (past 12 months) any vestibular problems (e.g. severe motion sickness or dizziness) history of epilepsy, pace-marker or/and electrical pumps (due to possible interference with electrical stimulation) prior experience of VR as they may already be adapted to VR.