시각 정보의 의미 수준 및 지속적 주의 조건에서 연령별 눈깜빡임 패턴 비교
Comparison of Age-Related Eye-Blink Patterns Across Visual Meaningfulness and Sustained Attention Conditions
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Humans attend to meaningful information in complex environments, and sustained attention plays an essential role in information processing and learning. However, aging has been associated with a decline in this ability, and eye-blink activity has been proposed as a physiological indicator of attentional state. In this study, a total of 80 participants (younger adults: n=40, 23.15±2.76 years; older adults: n=40, 71.02±6.36 years) completed four visual tasks, including three conditions with varying levels of visual meaningfulness and one modified vigilance task (mVT). Results indicated a significant difference in blink rate across task conditions (²(2)=24.53, p<.001), with the lowest blink frequency observed during the meaningful video condition (Task 3). In this condition, older adults showed a significantly higher blink rate than younger adults (U=586.0, p<.05). During the mVT (Task 4), older adults demonstrated a higher blink rate, lower accuracy, and slower reaction time, and blink rate was negatively correlated with response accuracy (=−.739, p<.001) and positively correlated with reaction time (=.789, p<.001). These findings suggest that eye-blink patterns may serve as a potential bio-marker for detecting age-related changes in sustained attention.
Abstract
Humans attend to meaningful information in complex environments, and sustained attention plays an essential role in information processing and learning. However, aging has been associated with a decline in this ability, and eye-blink activity has been proposed as a physiological indicator of attentional state. In this study, a total of 80 participants (younger adults: n=40, 23.15±2.76 years; older adults: n=40, 71.02±6.36 years) completed four visual tasks, including three conditions with varying levels of visual meaningfulness and one modified vigilance task (mVT). Results indicated a significant difference in blink rate across task conditions (²(2)=24.53, p<.001), with the lowest blink frequency observed during the meaningful video condition (Task 3). In this condition, older adults showed a significantly higher blink rate than younger adults (U=586.0, p<.05). During the mVT (Task 4), older adults demonstrated a higher blink rate, lower accuracy, and slower reaction time, and blink rate was negatively correlated with response accuracy (=−.739, p<.001) and positively correlated with reaction time (=.789, p<.001). These findings suggest that eye-blink patterns may serve as a potential bio-marker for detecting age-related changes in sustained attention.