PET scans of a brain showing active areas in obsessive-compulsive disorder; positive correlations (activity increases as symptoms get stronger), top row; negative correlation (activity decreases as symptoms strengthen), bottom. (Wellcome Department of Cognitive Neurology/SPL/Photo Researchers, Inc.) Image on Healthline

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PET scans of a brain showing active areas in obsessive-compulsive disorder; positive correlations (activity increases as symptoms get stronger), top row; negative correlation (activity decreases as symptoms strengthen), bottom. (Wellcome Departmen...

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