Notice bibliographique
Résumé
Concussion can result in deficits in balance during walking and standing, particularly exacerbated by sensory perturbations. The goal of this research was to investigate how concussion, 2 - 4 weeks after injury, impacts balance and sensory integration in response to various discrete and continuous perturbations during both standing and gait. This was done using three distinct studies: Study 1 examined responses to discrete virtual visual perturbations and physical platform perturbations during standing, Study 2 analyzed responses to discrete virtual visual perturbations and physical platform perturbations during walking, and Study 3 investigated responses to continuous virtual visual and vestibular perturbations while walking. In Study 1, 18 non-concussed controls and 12 concussed participants were tested. Discrete unexpected visual and physical perturbations during standing were applied to observe balance reactions. Concussed individuals demonstrated decreased ML COP displacement, velocity and path length in response to visual and physical perturbations and increased AP COP velocity and path length in response to visual perturbations. This suggests that concussed individuals may adopt a more conservative response to external perturbations in the ML direction and may demonstrate instability in the AP direction. In Study 2, the same perturbations were used with the same group of participants during gait. There were no group differences in response to physical perturbations, however, concussed individuals demonstrated lower centre of mass mediolateral displacement in response to visual perturbations. After a concussion, individuals exhibited a conservative stepping strategy, decreasing their centre of mass movement in response to discrete visual perturbations. This suggests an increased sensitivity to disrupted visual information. In Study 3, 15 non-concussed controls and 10 concussed participants were tested. Continuous visual and vestibular perturbations were applied while walking in a virtual environment to induce mediolateral deviations. It was observed that concussed individuals deviated more with vestibular perturbations and in conflicting perturbations and less with only visual perturbations. This suggests that after concussion there may be increased sensitivity to continuous vestibular perturbations and a more cautious strategy in response to visual perturbations. Overall, it was demonstrated that 1) visual perturbations resulted in balance disturbances during standing after concussion, 2) a conservative stepping strategy can be observed after concussion in response to visual perturbations, and 3) concussion may increase the sensitivity to vestibular information during gait and result in more cautious response to visual perturbations. Understanding balance and sensory integration after concussion can help improve individualized approaches to care after injury.
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 machine sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Le volet Gemma est une étiquette directe du modèle pour chaque travail de la base, lue sur la notice réduite au titre. Le volet Codex est un classifieur appris des 10 348 étiquettes directes de Codex et calibré sur les taux pondérés de l'échantillon; les champs sans appui suffisant ne portent aucun appel Codex. Le mode candidate est l'union des deux volets; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont pas des étiquettes humaines.
Scores du classifieur distillé par catégorie (deux têtes)
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,001 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,001 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,001 |
| Intégrité de la recherche | 0,001 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 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 source (Gemma direct ou Codex distillé), 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 ».