People who use this can also add natural sounds, such as birds chirping, or FM radio. It has 20 brightness settings and can have light begin 20-40 minutes before waking, making it a more customizable choice. In addition, it has a dusk simulator that slowly dims the light, which is a helpful feature for people who work shift work. It begins lighting up before the alarm goes off, simulating dawn. The Philips Wake-up Light is a popular light therapy alarm clock for several reasons. Light therapy alarm clocks simulate sunrise to allow the brain to begin making the hormones associated with wakefulness. Our ancestors woke with natural sunlight, but modern life often demands having a less optimal schedule. All of them operate on the same principle: Waking is easier and more natural when the brain is primed by exposure to light. There are a variety of kinds of light therapy alarm clocks, each with their own set of features and benefits. These devices begin the day with bright light that induces the production of hormones that make wakefulness and a positive mood possible. Light therapy alarm clocks have been found to be especially helpful with both seasonal affective disorder and circadian sleep disorder. It is treated by exposing the person to the right amounts of light during the day, so their hormones can self-regulate. Seasonal affective disorder, or SAD, is caused by low levels of certain wavelengths of light in cold weather months. In addition, light therapy is used to treat seasonal affective disorder. The effects shift work has on your circadian rhythm can be mitigated by a combination of a melatonin supplement taken before you sleep to replicate the natural sleep-wake distribution of the hormone as well as bright light therapy when you awake to simulate the rising of the sun. In these disorders, the circadian rhythm does not support sleep and wakefulness at times when modern life demands them. Some people suffer from different types of circadian sleep disorders, such as shift work syndrome or delayed sleep phase disorder. Light therapy is used to treat a variety of health issues. Light therapy in the time period just before waking has been found to be especially helpful. Light therapy, also called phototherapy, can improve lives and keep people safer. In addition, a lack of sleep can increase the chances of vehicle accidents and other deadly events. People who are not getting the right balance of light may develop depression, anxiety and even heart problems. Studies in circadian biology have shown that the light and dark cycles that regulate the circadian rhythm are important for more than just sleep and wakefulness. This gives your brain cues about whether to make hormones associated with wakefulness or those associated with sleep. Sensors in your eyes register strong light in certain wavelengths and pass this signal to one’s brain. People can develop a variety of health problems as a result of not getting the right kind of light or not getting it at the right times.
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