Peripersonal Space Representation in Upper Limb Segmental Exclusion
Study of the Representation of Action Peripersonal Space in Participants With Unilateral Segmental Exclusion of the Upper Limb Compared to Asymptomatic Subjects
Union de Gestion des Etablissements des Caisses d'Assurance Maladie - Nord Est
60 participants
Dec 4, 2025
OBSERVATIONAL
Conditions
Summary
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.
Eligibility
Plain Language Summary
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Interventions
Participants wear an Oculus Quest 2 VR headset. They first perform a motor task to measure Real Reachable Distance (DMA-r). Then, they perform a perceptual task where they must judge, without moving, if a virtual object is reachable (DMA-p). The test evaluates different spatial planes (front, 45° right, 45° left) and heights (shoulder, navel).
Locations(1)
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NCT07349173