Dr. Aysenil Belger is a professor of psychiatry at UNC-Chapel Hill and an adjunct professor at the Duke-UNC Brain Imaging and Analysis Center. Here she explains the mechanics and applications of neuroimaging. Questions and answers have been edited. Q: How do different types of brain scans work? PET and MRI scans can provide images of brain anatomy, structure and function. When a person perceives stimuli or thinks...
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