Dr. Mayberg introduces herself and explains what depression is.
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Dr. Helen Mayberg: My name is Helen Mayberg. I am a medical doctor. I am trained as a neurologist. I study the neurology of depression and I am currently Professor of Psychiatry and Neurology at the Emory University School of Medicine in Atlanta. What is depression? Well, depression is a syndrome. It's defined by a set of symptoms that affect mood and then one's thinking and one's basic drive states. We make the diagnosis, not by test, unfortunately, but by the constellation of symptoms, and those symptoms have been defined as the presence of low or sad mood that's there every day in a pervasive way for a minimum of two weeks, that's accompanied by changes in sleep, appetite, drive, energy, libido, and thinking, and that's also accompanied, again, by really pervasive and steady thoughts of helplessness, hopelessness, and thoughts of death.

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