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Cognitive workload affects ocular accommodation and pupillary responseMihelčič, Matjaž, 1969- ; Podlesek, AnjaSignificance: Cognitive involvement in reading causes variations in the tonus of autonomic nerve system. The aim of this study was to examine the effect of short-term cognitive load on accommodation ... and pupils’ absolute values and temporal variability in test persons performing three different types of tasks. Purpose: We aimed to show how cognitive tasks of different type and difficulty level affect accommodation and pupil behavior during a short time interval. Methods: Participants (n = 58; mean age 16.4 years, SD = 0.56) performed reading from a 10-inch LCD screen placed at 40 cm distance. Three different types of tasks (numerical, textual, and the Stroop task), each at three different levels of cognitive load were introduced. Participants had 90 s to complete each task. Accommodative and pupillary responses were measured with video- retinoscope Power Refractor 3 at 50 Hz. Results: Pupil size was largest in the Stroop task (M = 5.20 mm, SD = 0.75 mm), followed by the numerical tasks (M = 5.02 mm, SD = 0.72 mm) and textual tasks (M = 4.78 mm, SD = 0.71 mm). Accommodative fluctuations measured as accommodation SD were largest in the textual tasks (M = 0.67 D, SD = 0.34 D), followed by the numerical tasks (M = 0.61 D, SD = 0.40 D) and the Stroop task (M = 0.52 D, SD = 0.21 D). Conclusions: In our experiment, short-term cognitive load was associated with altered pupillary and accommodative response to near tasks. In conflicting tasks (Stroop) or in performing continuing calculations, the pupils were larger; in tasks requiring logical reasoning, the accommodative fluctuations were greater. These effects can potentially be associated with current near-point stress and myopia growth models.Source: Journal of optometry. - ISSN 1888-4296 (24. 6. 2022, 9 str.)Type of material - article, component partPublish date - 2022Language - englishCOBISS.SI-ID - 116137731
Author
Mihelčič, Matjaž, 1969- |
Podlesek, Anja
Topics
vid |
bližinski vid |
stres bližinskega vida |
akomodacija |
kognitivni napor |
zenične reakcije |
kratkovidnost |
Stroopov test |
vision |
near vision |
near vision stress |
accommodation |
cognitive demand |
pupillary response |
myopia |
Stroop task
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Mihelčič, Matjaž, 1969- | ![]() |
Podlesek, Anja | 18919 |
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