CONVERGENT VALIDITY AND STABILITY OF A 5-MINUTE WEB CAMERA-BASED EYE-TRACKING COGNITIVE ASSESSMENT
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Résumé
Joshua Gills1, Spencer Smith1, Emily Bates1, Jordan M. Glenn2, Erica N. Madero2, Nick T. Bott2, & Michelle Gray1 1University of Arkansas, Fayetteville, AR., 2Neurotrack Technologies, Inc., Redwood City, CA. As populations age worldwide, dementia prevalence is projected to triple from current rates to 132 million by 2050. While there is no cure for Alzheimer’s disease (AD) or other forms of dementia, early detection of symptoms allow treatment to start earlier and improve outcomes. Currently, there exists a noninvasive validated 30-minute (min) eye-tracking cognitive assessment for predicting AD risk. However, the time requirements and passive nature of the paradigm creates a burden for the user. A shorter task utilizing an active paradigm would improve user experience and increase scalability of the test. PURPOSE: The purposes of this study were to 1) determine convergent validity of an active 5-min web camera-based eye-tracking task to measure visual recognition memory compared to the validated passive 30-min task and 2) determine the stability and test-retest reliability of the 5-min test. METHODS: This prospective study included 44 cognitively intact participants (n = 28 females, n = 16 males; age = 50.0 ± 27.6) who were divided into two cohorts: older adults (ages 65+ years, n = 20) and young adults (ages 18 – 46 years, n = 24). Participants reported for testing on two separate occasions. The first visit included informed consent, medical history questionnaire, Montreal Cognitive Assessment (MOCA), 30-min eye tracking test, and 5-min eye tracking test. The second testing session occurred at least 14 days later and participants were given an alternate form of the 5-min eye tracking test to minimize learning effects. RESULTS: Participants were cognitively normal based on MOCA scores (27.9 ± 1.4). A Pearson’s correlation determined the 30-min task was moderately correlated with the 5 min task at the first (r =.55; p < .001) and second (r =.58; p = .001) time points. Moreover, there was a high test re-test reliability of the 5-min test (r =.73; p < .001). CONCLUSION: The active 5-min eye-tracking assessment displayed moderate convergent validity to the passive 30-min test for assessing working memory and demonstrated strong test-retest reliability. Initial data indicate the 5-min version of the eye-tracking task may be a more scalable alternative to the original 30-min version. However further research is needed to ultimately substantiate this claim. ACKNOWLEDGEMENTS: This study was funded by Neurotrack Technologies and The University of Arkansas’ Department of Health, Human Performance, and Recreation.
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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 | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| 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 découle