Characterization of Muscle Activity During a Surface EMG-controlled Rehabilitation Game

During the game session, participants will be paired in advance of the visit (an adult participant with hemiparesis paired with another adult participant with hemiparesis, or a healthy volunteer and a child with cerebral palsy paired with another child with a cerebral palsy) to allow for testing of different conditions for the electromyography-controlled rehabilitation game. The estimated duration for each participant is 1 hour and 30 minutes, including a 30-minute game session.

Participants will play the rehabilitation game under different modalities : individually, in pairs in a co-active mode, or in a competitive mode.

In individual mode, they play two different games a rythm game (following the musical tempo by alternating agonist/antagonist contractions) and a target game (the participant controls a rocket that must hit targets based on the intensity of muscle contractions and the muscle being activated....).

The game modalities will be presented in a randomized order.

Inclusion criteria

for children with cerebral palsy:

• Participants with cerebral palsy who are able to walk, GMFCS stages I through III, hemiplegic, diplegic, or quadriplegic
• Aged 7 to 17 years
• With palpable contractions of the target muscles (triceps surae and tibialis anterior) (≥ 1 on the Medical Research Council [MRC] scale)
• Having received verbal and written information about the protocol, having agreed to participate in this study, and having signed a consent form if the participant is 15 years of age or older
• Signed consent for participation from the participant's legal guardians
• Enrolled, either personally or through their parents, in a social security program

Inclusion criteria

for adults with hemiparesis

• Stroke in the subacute or chronic phase
• Aged 18 to 85 years
• With palpable contractions of the target muscles (triceps surae and tibialis anterior) (≥ 1 on the Medical Research Council [MRC] scale)
• Having received verbal and written information about the protocol and having signed a consent form to participate in this study
• Enrolled in a social security program

Inclusion criteria

for Healthy subjects matched for age to the group of participants with hemiparesis

• Aged 18 to 85
• No neurological disorders
• Who received verbal and written information about the protocol and signed a consent form to participate in this study.

Exclusion criteria

• Surgery on the lower extremities within the past 6 months
• A botulinum toxin injection into the triceps surae and/or the tibialis anterior within the past 3 months
• Pain during dorsiflexion or plantarflexion of the ankle joint
• Cognitive impairments limiting participation
• A person referred to in Articles L1121-5, L1121-6, L2121-8, L1121-9 of the Public Health Code
• Participating in another therapeutic or drug intervention study that could affect this study