دورية أكاديمية
Using mobile eye tracking to measure cognitive load through gaze behavior during walking in lower limb prosthesis users: A preliminary assessment.
| العنوان: | Using mobile eye tracking to measure cognitive load through gaze behavior during walking in lower limb prosthesis users: A preliminary assessment. |
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| المؤلفون: | Manz S; Department of Health Science and Technology, Aalborg University, Aalborg, Denmark; Ottobock SE & Co. KGaA, Global Research, Duderstadt, Germany., Schmalz T; Ottobock SE & Co. KGaA, Clinical Research & Services, Research Biomechanics, Göttingen, Germany., Ernst M; Ottobock SE & Co. KGaA, Clinical Research & Services, Research Biomechanics, Göttingen, Germany., Köhler TM; Ottobock SE & Co. KGaA, Clinical Research & Services, Research Biomechanics, Göttingen, Germany., Gonzalez-Vargas J; Ottobock SE & Co. KGaA, Global Research, Duderstadt, Germany., Dosen S; Department of Health Science and Technology, Aalborg University, Aalborg, Denmark. Electronic address: sdosen@hst.aau.dk. |
| المصدر: | Clinical biomechanics (Bristol, Avon) [Clin Biomech (Bristol, Avon)] 2024 May; Vol. 115, pp. 106250. Date of Electronic Publication: 2024 Apr 12. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Science Country of Publication: England NLM ID: 8611877 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1879-1271 (Electronic) Linking ISSN: 02680033 NLM ISO Abbreviation: Clin Biomech (Bristol, Avon) Subsets: MEDLINE |
| أسماء مطبوعة: | Publication: 1995- : Oxford : Elsevier Science Original Publication: Bristol, UK : J. Wright, c1986- |
| مواضيع طبية MeSH: | Walking*/physiology , Artificial Limbs* , Eye-Tracking Technology* , Cognition*/physiology, Humans ; Male ; Adult ; Female ; Fixation, Ocular/physiology ; Lower Extremity/physiopathology ; Biomechanical Phenomena ; Middle Aged ; Amputees ; Eye Movements/physiology |
| مستخلص: | Background: Lower limb amputation does not affect only physical and psychological functioning but the use of a prosthetic device can also lead to increased cognitive demands. Measuring cognitive load objectively is challenging, and therefore, most studies use questionnaires that are easy to apply but can suffer from subjective bias. Motivated by this, the present study investigated whether a mobile eye tracker can be used to objectively measure cognitive load by monitoring gaze behavior during a set of motor tasks. Methods: Five prosthetic users and eight able-bodied controls participated in this study. Eye tracking data and kinematics were recorded during a set of motor tasks (level ground walking, walking on uneven terrain, obstacle avoidance, stairs up and ramp down, as well as ramp up and stairs down) while the participants were asked to focus their gaze on a visual target for as long as possible. Target fixation times and increase in pupil diameters were determined and correlated to subjective ratings of cognitive load. Findings: Overall, target fixation time and pupil diameter showed strong negative and positive correlations, respectively, to the subjective rating of cognitive load in the able-bodied controls (-0.75 and 0.80, respectively). However, the individual correlation strength, and in some cases, even the sign, was different across participants. A similar trend could be observed in prosthetic users. Interpretation: The results of this study showed that a mobile eye tracker may be used to estimate cognitive load in prosthesis users during locomotor tasks. This paves the way to establish a new approach to assessing cognitive load, which is objective and yet practical and simple to administer. Nevertheless, future studies should corroborate these results by comparing them to other objective measures as well as focus on translating the proposed approach outside of a laboratory. Competing Interests: Declaration of competing interest The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Sabina Manz reports that prosthetic equipment to conduct experiments was provided by Ottobock SE & Co KGaA. Thomas Schmalz, Michael Ernst, Thomas Maximilian Köhler, and Jose Gonzalez-Vargas are employed by Ottobock SE & Co KGaA. If there are other authors, they declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (Copyright © 2023. Published by Elsevier Ltd.) |
| فهرسة مساهمة: | Keywords: Cognitive load; Eye tracking; Lower limb amputation; Pupil diameter; Target fixation time |
| تواريخ الأحداث: | Date Created: 20240424 Date Completed: 20240525 Latest Revision: 20240525 |
| رمز التحديث: | 20240527 |
| DOI: | 10.1016/j.clinbiomech.2024.106250 |
| PMID: | 38657356 |
| قاعدة البيانات: | MEDLINE |
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Full Text Finder | تدمد: | 1879-1271 |
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| DOI: | 10.1016/j.clinbiomech.2024.106250 |