The fact that the illuminance of LED lights affects human attention and long-term memory has been verified through various studies, but there are no consistent research results about what level of illuminance is effective. The aims of this study were to systematically verify the effects of LED lighting on attention and long-term memory. The experiment was designed with four illuminance levels—300 lx, 400 lx, 500 lx, and 1,000 lx—as experimental conditions to determine the effects of LED lights on attention and long-term memory. Participants in the experiment were 18 college students. The attention task was performed using a handmade attention measuring instrument. Long-term memory was measured by the word fragment completion (hereinafter, referred to as “WFC”) task on the memory retention volume of the learning task that was learned exactly 24 hours before. Of the total 20 tasks, the ratio of correctly retrieval tasks was used as a dependent variable. As a result, attention showed the highest performance with a mean performance of 19.39 (SD = 3.78) at 1,000 lx. A statistically significant difference was also found between the 1,000 lx and 300 lx conditions (). On the contrary, long-term memory showed the highest retrieval rate at an average of 58.06% (SD = 22.57) at 400 lx, and long-term memory performance was better in the order of 500 lx (mean = 48.89, SD = 20.33), 1,000 lx (mean = 45.83, SD = 23.53), and 300 lx (Mean = 43.33, SD = 19.10). Statistically, there was a significant difference between 300 lx and 400 lx (), 400 lx and 1,000 lx (). Through this study, it was verified that the effects of attention and long-term memory are different according to the illuminance of LED lighting, and these results can be important data to clarify the influence of light on human memory in the future.

中文翻译：

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LED照明对注意力和长期记忆的影响

LED照明的照度会影响人的注意力和长期记忆这一事实已经通过各种研究得到了证实，但是关于什么水平的照度是有效的却没有一致的研究结果。这项研究的目的是系统地验证LED照明对注意力和长期记忆的影响。实验设计了四个照度级别（300 lx，400 lx，500 lx和1,000 lx）作为实验条件，以确定LED灯对注意力和长期记忆的影响。实验的参与者是18名大学生。注意任务是使用手工注意力测量仪执行的。长期记忆是通过单词“片段完成度”（以下简称“ 恰好在24小时之前学习的学习任务的内存保留量上称为“ WFC”任务。在全部20个任务中，正确检索任务的比率用作因变量。结果，注意力显示了最高的性能，在1,000 lx时的平均性能为19.39（SD = 3.78）。在1,000 lx和300 lx条件之间也发现了统计学上的显着差异（）。相反，长期记忆在400 lx时显示出最高的检索率，平均为58.06％（SD = 22.57），而长期记忆性能则更好，约为500 lx（平均值= 48.89，SD = 20.33）。 ），1,000 lx（平均值= 45.83，SD = 23.53）和300 lx（平均值= 43.33，SD = 19.10）。统计上，300 lx和400 lx（）， 400 lx和1,000 lx（）之间存在显着差异。通过这项研究，证实了注意力和长期记忆的影响根据LED照明的照度而有所不同，这些结果对于阐明光对未来人类记忆的影响可能是重要的数据。