The naturally weak daylight during [[winter]] at extreme latitudes causes winter [[depression]]. Also, weaker [[electrical]] activity is found in the retinas of depressed people, which gives them poor [[visual]] [[contrast]] so that they see the world in grey, depressing hues. A solarium or other source of bright light may be used as light [[therapy]] to treat this.[http://en.wikipedia.org/wiki/Gloom] | The naturally weak daylight during [[winter]] at extreme latitudes causes winter [[depression]]. Also, weaker [[electrical]] activity is found in the retinas of depressed people, which gives them poor [[visual]] [[contrast]] so that they see the world in grey, depressing hues. A solarium or other source of bright light may be used as light [[therapy]] to treat this.[http://en.wikipedia.org/wiki/Gloom] |