Post-saccadic Eye Movement Indices Under Cognitive Load: A Path Analysis to Determine Visual Performance.
| Autor: | Salehi Fadardi M; Department of Optometry & Vision Sciences, University of Melbourne, Melbourne, Australia., Salehi Fadardi J; Department of Psychology, Ferdowsi University, Mashhad, Iran.; Claremont Graduate University, California, USA.; School of Psychology, Bangor University, Bangor, UK., Mahjoob M; Health Promotion Research Center, Department of Optometry, Rehabilitation Faculty, Zahedan University of Medical Sciences, Zahedan, Iran., Doosti H; Department of Statistics, Macquarie University, Sydney, Australia. |
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| Jazyk: | angličtina |
| Zdroj: | Journal of ophthalmic & vision research [J Ophthalmic Vis Res] 2022 Aug 15; Vol. 17 (3), pp. 397-404. Date of Electronic Publication: 2022 Aug 15 (Print Publication: 2022). |
| DOI: | 10.18502/jovr.v17i3.11578 |
| Abstrakt: | Purpose: The evidence on the linear relationship between cognitive load, saccade, fixation, and task performance was uncertain. We tested pathway models for degraded task performance resulting from changes in saccadic and post-saccadic fixation under cognitive load. Methods: Participants' ( n = 38) eye movements were recorded using a post-saccadic discrimination task with and without arithmetic operations to impose cognitive load, validated through recording heart rate variability and subjective measurement. Results: Results showed that cognitive load led to longer latencies of saccade and fixation; more inaccurate responses and fewer secondary saccades ( P < 0.001). Longer saccade latencies influenced task performance indirectly via increases in fixation latency, therefore, longer reaction times and higher response errors were observed due to limited fixation duration on desired target. Conclusion: We suggest that latency and duration of fixation indicate efficiency of information processing and can predict the speed and accuracy of task performance under cognitive load. Competing Interests: No conflicting relationship exists for any author. (Copyright © 2022 Fadardi et al.) |
| Databáze: | MEDLINE |
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