Pré-Publication, Document De Travail Année : 2025

Coexistence of two adaptation processes in a visuomotor rotation task

Résumé

Motor adaptation is a learning process that enables humans to regain proficiency when sensorimotor conditions are sustainably altered. Many studies have documented the properties of motor adaptation, yet the underlying mechanisms of motor adaptation remain imperfectly understood. In this study, we propose a computational analysis of adaptation to a visuomotor rotation task and examine it through an experiment. Our analysis suggests that two distinct processes contribute to produce adaptation: one which straightens trajectories, and another which redirects trajectories. We designed a visuomotor rotation task in a 3D virtual environment where human participants performed a pointing task using a head-mounted display controller represented by a cursor that was visually rotated by an angular deviation relative to its actual position. We observed that: (1) the trajectories were initially curved and misdirected, and became straighter and better directed with learning; (2) the straightening process occurred faster than the redirection process. These findings are consistent with our computational analysis and disclose a new and different perspective on motor adaptation.

Fichier principal
Vignette du fichier
Article merged.pdf (757.43 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence

Dates et versions

hal-05282530 , version 1 (25-09-2025)
hal-05282530 , version 2 (05-11-2025)

Licence

Identifiants

  • HAL Id : hal-05282530 , version 1

Citer

Alexis Berland, Youssouf Ismail Cherifi, Alexis Paljic, Emmanuel Guigon. Coexistence of two adaptation processes in a visuomotor rotation task. 2025. ⟨hal-05282530v1⟩
185 Consultations
346 Téléchargements

Partager

  • More