This study aims to evaluate the representation of action peripersonal space (PPS) in subjects suffering from unilateral segmental exclusion syndrome of the upper limb compared to healthy control subjects. Segmental exclusion is defined by non-use or under-use of a limb segment without central nervous system damage. The study hypothesizes that this syndrome leads to a modification (shrinkage) of the PPS representation. Participants will perform reachability judgments in a Virtual Reality (VR) environment.
Age ≥ 18 years.
Presenting unilateral exclusion symptom of the upper limb or part of the hand evolving for > 3 months.
No contraindication to force work in daily activities.
For patients with finger exclusion: at least 2 perturbed items related to exclusion on tests 3 and 4 of the "Bilan 400 points".
Visual impairments.
Central neurological pathology.
Unstabilized psychiatric pathology.
Communication or comprehension difficulties.