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How Changing Light Could Help People With Dementia, Other Diseases
For the study, the researchers removed some standard fluorescent lighting and installed new blue-white lamp prototypes at the GE's Nela Park campus, where daylight, which has proven health benefits, is not readily available.
They hypothesized that periods of blue light, like daylight, can help regulate the sleep-wake rhythm, which is a behavioural pattern linked to the 24-hour biochemical circadian cycle of the hormone melatonin. The levels of the hormone determine if people are awake or sleepy.
And by increasing exposure to blue-white light during the day, and yellow-white light in the evening, the researchers hope to help patients regulate their sleep-wake cycles so that they are more awake during the day and more asleep at night.
According to Patricia Higgins, associate professor at the Bolton School of Nursing and one of the lead investigators, the project may prove to be especially beneficial for people suffering from dementia.
In a recent study with five male patients, each person suffering from dementia and living in a long-term care facility, the researchers installed the blue-white lights in an activities room where most residents gathered for meals and daytime activities.
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