interesting how lights can help relieve something liek depression:
"Exposure to bright light may ease symptoms of depression in elderly people.
A new study shows that three weeks of bright light therapy using specially designed light boxes improved symptoms of depression by as much as 54% in older adults with depression.
In addition to lifting their moods, bright light therapy improved sleep and optimized levels of the neurotransmitter serotonin. Low levels of serotonin are associated with depression and often targeted by antidepressant drugs.
Researchers say it’s the first major study to show a beneficial effect of bright light therapy on treating depression in the elderly with non-seasonal major depressive disorder."
read more: http://www.webmd.com/depression/news/20110102/bright-light-eases-depress...