Using a 3D hand motion controller for reaching tasks in a powered wheelchair simulator
Notice bibliographique
Résumé
Reaching for objects is essential in powered wheelchair (PW) mobility. For PW users, learning how to navigate their PW to reach for objects safely, as in daily activities, is crucial to their quality of life. Training for such PW use is limited due to lack of dedicated space, time, or equipment. Addressing these issues, the McGill Immersive Wheelchair (miWe) simulator is a virtual reality (VR) system for teaching PW driving skills that runs on an ordinary computer. However, a practical and low-cost training tool for reaching tasks does not exist for the miWe or any other PW simulator. Objective: The purpose of this study was to evaluate a $150 3D hand motion controller (Razer Hydra, Sixense, USA), as an interface for training reaching tasks within the miWe. This device allows 3D control of a virtual cursor with hand/arm movements. Method: Twelve experienced PW users performed three combined PW navigation and reaching tasks both in the real world (RW) and in the miWe: working at a desk, operating an elevator, and opening a door. First, we determined concordance of task performance in VR with that in the RW. Total task time, time spent reaching, number of joystick movements, and number of reaching movements were measured. A video task analysis was also performed. Second, the sense of presence in VR was assessed using the iGroup Presence Questionnaire (IPQ). Third, participants gave feedback in an open questionnaire. Results: Tasks performed in VR demonstrated significantly (p<0.05, Wilcoxon Sign-Rank) longer task times and greater number of movements for the elevator and desk tasks but not the door task. Task analysis revealed significantly greater (p<0.05) risk of collisions and reaching errors in VR compared to RW tasks. The majority of navigation and reaching behaviours showed moderate to excellent (K > 0.4, Cohen's Kappa) agreement between the two environments. IPQ scores demonstrated a significant (p < 0.05) increase in "involvement" while "general sense of presence", "spatial presence", and "realism" remained the same compared to previously collected miWe data. Participants generally perceived the tasks and the reaching component to be useful, but noted difficulties with joystick control and software glitches. Conclusions: Task performance showed poorer kinematic performance in VR than RW overall, but similar strategies. While the reaching component represents a promising addition to the miWe simulator, important limitations must be addressed for this VR simulator to be an effective tool for training PW navigation-reaching tasks.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,002 | 0,002 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,001 |
| Méta-épidémiologie (sens large) | 0,001 | 0,000 |
| Bibliométrie | 0,001 | 0,001 |
| Études des sciences et des technologies | 0,001 | 0,000 |
| Communication savante | 0,000 | 0,001 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,001 | 0,002 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».