On November 5, Seoul semiconductor announced that following Seoul National University in Korea and Basel University in Europe, the latest clinical trials showed that exposure to sunlight like spectrum can improve key learning abilities, such as working memory, cognitive processing speed and test accuracy.
It is reported that the clinical trial began in 2019 and was carried out by the division of sleep and circadian disorders of Brigham and women's Hospital, a teaching institution affiliated to Harvard Medical School. The participants are adults at the university stage. The research results clearly show the effectiveness of procedural learning.
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| Compare cognitive performance exposed to traditional LED lighting or sunlike LED lighting |
Dr. shadab Rahman, a researcher in the sleep and circadian rhythm disorders Department of Brigham and women's Hospital, an assistant professor of medicine at Harvard Medical School, and a master of public health, led the study together with Dr. Leilah grant, Dr. Melissa St. Hilaire, Dr. Steven lockley and other researchers at Brigham and women's Hospital.
Dr. Rahman said that even if the color temperature and brightness are the same, different spectra of light may affect the non visual response to light in different ways, including circadian rhythm and cognition. In this experiment, the researchers found that under the spectral illumination similar to sunlight, the working memory, cognitive processing speed, program learning and test accuracy of young people are better than those under the traditional LED spectral illumination. This important result can provide information for indoor lighting selection to enhance students' learning and memory function.
The fluorescent spectrum lamp used in the study is a sunlike product manufactured and provided by Seoul semiconductor company. Sunlike is an optical semiconductor technology that can reproduce the natural light spectral curves of red, orange, yellow, green, blue, purple and other wavelengths. This new concept of LED light source embodies almost the same characteristics as natural light, and accordingly optimizes the human 24-hour circadian rhythm.
Nowadays, the research on the relationship between light and human biological functions is increasing. A recent study by Professor Christian cajochen and his team on the impact of spectrum on sleep quality, visual comfort, health and daytime alertness found that daylight LED is beneficial to visual comfort, melatonin, mood, awake performance and sleep, The study was published in the Journal of lighting and research technology on March 24, 2019.
In addition, an experiment conducted at Seoul National University School of medicine in July 2018 showed that using sunlike LED lights can improve vitality and alertness.
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| Spectral comparison under the same shape and color illumination |
Seoul semiconductor CEO Li Zhenxun said. Nature is great. The human body has a 24-hour biological clock. It has evolved to set the time by tracking the cycle of daily sunlight. Sunlike is a technology that can be as close to sunlight as possible and reproduce all visible wavelengths. Publicity is committed to research and development to provide plants, animals and humans with the light closest to the sun, which helps to maintain circadian rhythm and sleep, and can also help children and students learn effectively and maintain good health.
It is reported that Seoul semiconductor and Toshiba materials jointly participated in the development and listing of sunlike in 2017. In the past two years, in order to improve the decision-making speed and operation efficiency of sunlike, the two companies have conducted continuous negotiation. Seoul semiconductor has obtained all technologies, patents and trademarks related to sunlike, the light closest to the sun. The core staff of Toshiba materials also joined Seoul semiconductor and began to expand sales in September. (source: Seoul semiconductor)
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