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Blue-light effects on saccadic eye movements and attentional disengagement
Attention, Perception, & Psychophysics ( IF 1.7 ) Pub Date : 2021-03-09 , DOI: 10.3758/s13414-021-02250-z
Hsing-Hao Lee , Su-Ling Yeh

People are constantly exposed to high-energy blue light as they spend considerable amounts of time reading and browsing materials on electronic products like computers and cellphones. Recent studies suggest that the stimulation of intrinsically photosensitive retinal ganglion cells (ipRGCs)—a newly discovered type of photoreceptor shown to be particularly sensitive to blue light—activates brain regions related to eye movements and attentional orienting (e.g., frontal eye fields). It remains unclear, however, whether and how blue light affects eye movements and attention behaviorally. We examined this by adopting the gap paradigm in which participants made saccades to a peripheral target as quickly and accurately as possible while the fixation sign vanished (i.e., the gap condition) or remained visible. Participants were exposed to blue and orange light on two separate days. Faster saccade latency under blue light was found across two experiments, and the results indicate that blue light shortened saccade latency when attention and eye movements operate simultaneously. Our findings provide evidence for the blue-light facilitatory effect on eye movements and attentional disengagement, and suggest that blue light can enhance the speed of saccadic eye movements.



中文翻译:

蓝光对眼球运动和注意力脱离的影响

人们经常花费大量时间阅读和浏览电子产品(例如计算机和手机)上的材料,从而不断暴露于高能量的蓝光下。最近的研究表明,对内在光敏的视网膜神经节细胞(ipRGC)的刺激(一种新发现的对蓝光特别敏感的感光器),可以激活与眼睛运动和注意力定向(例如,额眼)相关的大脑区域。但是,尚不清楚蓝光是否以及如何影响行为和眼睛的运动。我们通过采用间隙范式检查了这一点,在这种范式中,参与者在注视信号消失(即间隙状态)或保持可见的同时,尽可能快而准确地向周围目标扫视。参与者分别在两天里暴露在蓝色和橙色的光下。在两个实验中发现蓝光下的扫视潜伏期更快,结果表明当注意力和眼球运动同时进行时,蓝光缩短了扫视潜伏期。我们的发现提供了蓝光对眼睛运动和注意力脱离的促进作用的证据,并表明蓝光可以提高眼跳运动的速度。

更新日期:2021-03-10
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