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Depression Reduces Color Perception, Study Finds

(PsychCentral.com) UPDATED 2010-07-21
New research published in the journal Biological Psychiatry has found that people who have major depression have a reduced ability to perceive the brightness of colors. Scientists using a technique called a pattern electroretinogram (PERG) measured 80 study participants' ability to perceive contrast by measuring the tiny amount of electrical change in the eye triggered when the retina is stimulated by looking at objects with contrasting colors. The researchers found that the more depressed a patient was, the less his or her retinas responded to contrast. Experts say this finding may explain the cultural association between depression and the colorless terms such as "gray" or "black" used to describe these depressed moods.   Read full story >
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