Interest of a Musical Intervention on Stress Induced During Botulinum Toxin Injections in Spasticity (MUSIBOT)

The intervention group (IM-IM) will receive a tablet and headphones to listen to music during the toxin injections. Then, during the waiting time, the patient, with or without assistance, will choose the music they wish to listen to, according to their musical tastes. The duration of the music can be modulated according to the duration of the medical procedure to follow.