Depression has been associated with reduced volume of the hippocampus in magnetic resonance imaging studies in humans. A new study just published in Biological Psychiatry now clarifies the cellular basis of these volumetric changes, which have been unclear until now.Beginning in the 1980s, a series of studies in rodents conducted by Robert Sapolsky and other investigators suggested that the CA3 area of the hippocampus, a brain region implicated in mood and memory, was particularly vulnerable to stress.
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