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タイトル: Pupil dynamics during very light exercise predict benefits to prefrontal cognition
著者: Kuwamizu, Ryuta
Yamazaki, Yudai
Aoike, Naoki
Hiraga, Taichi
Hata, Toshiaki
Yassa, Michael A.
Soya, Hideaki
著者名の別形: 桑水, 隆多
山崎, 雄大
青池, 直樹
平賀, 大一
秦, 俊陽
征矢, 英昭
キーワード: Pupillometry
Physical activity
Arousal
Prefrontal cortex
fNIRS
発行日: 15-Aug-2023
出版者: Elsevier BV
誌名: NeuroImage
巻: 277
論文番号: 120244
抄録: Physical exercise, even stress-free very-light-intensity exercise such as yoga and very slow running, can have beneficial effects on executive function, possibly by potentiating prefrontal cortical activity. However, the exact mechanisms underlying this potentiation have not been identified. Evidence from studies using pupillometry demonstrates that pupil changes track the real-time dynamics of activity linked to arousal and attention, including neural circuits from the locus coeruleus to the cortex. This makes it possible to examine whether pupil-linked brain dynamics induced during very-light-intensity exercise mediate benefits to prefrontal executive function in healthy young adults. In this experiment, pupil diameter was measured during 10 min of very-light-intensity exercise (30% V̇o2peak). A Stroop task was used to assess executive function before and after exercise. Prefrontal cortical activation during the task was assessed using multichannel functional near-infrared spectroscopy (fNIRS). We observed that very-light-intensity exercise significantly elicited pupil dilation, reduction of Stroop interference, and task-related left dorsolateral prefrontal cortex activation compared with the resting-control condition. The magnitude of change in pupil dilation predicted the magnitude of improvement in Stroop performance. In addition, causal mediation analysis showed that pupil dilation during very-light-intensity exercise robustly determined subsequent enhancement of Stroop performance. This finding supports our hypothesis that the pupil-linked mechanisms, which may be tied to locus coeruleus activation, are a potential mechanism by which very light exercise enhances prefrontal cortex activation and executive function. It also suggests that pupillometry may be a useful tool to interpret the beneficial impact of exercise on boosting cognition.
記述: 軽運動の前頭前野機能向上効果は瞳に映る. 京都大学プレスリリース. 2023-07-12.
著作権等: © 2023 Published by Elsevier Inc.
This is an open access article under the CC BY-NC-ND license.
URI: http://hdl.handle.net/2433/284138
DOI(出版社版): 10.1016/j.neuroimage.2023.120244
PubMed ID: 37353097
関連リンク: https://www.kyoto-u.ac.jp/ja/research-news/2023-07-12-0
出現コレクション:学術雑誌掲載論文等

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