title: Finding the Elusive Psychiatric "Lesion" With 21st-Century Neuroanatomy: A Note of Caution.
abstract: The widespread use of MRI has led to a wealth of structural and functional anatomical findings in patients with diverse psychiatric disorders that may represent insights into pathobiology. However, recent technical reports indicate that data from popular MRI research-particularly structural MRI, resting--state functional MRI, and diffusion tensor imaging--are highly sensitive to common artifacts (e.g., head motion and breathing effects) that may dominate the results. Because these and other important confounders of MRI data (e.g., smoking, body weight, metabolic variations, medical comorbidities, psychoactive drugs, alcohol use, mental state) tend to vary systematically between patient and control groups, the evidence that findings are neurobiologically meaningful is inconclusive and may represent artifacts or epiphenomena of uncertain value. The authors caution that uncritically accepting from study to study findings that may represent fallacies of all sorts carries the risk of misinforming practitioners and patients about biological abnormalities underlying psychiatric illness.
authors: From the Lieber Institute for Brain Development, Johns Hopkins University, Baltimore; and the Departments of Psychiatry and Behavioral Sciences, Neurology and Neurosurgery, and Neuroscience, and the McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore.
authors: Daniel R
authors: DR
authors: Weinberger
authors: From the Lieber Institute for Brain Development, Johns Hopkins University, Baltimore; and the Departments of Psychiatry and Behavioral Sciences, Neurology and Neurosurgery, and Neuroscience, and the McKusick-Nathans Institute of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore.
authors: Eugenia
authors: E
authors: Radulescu
mesh_terms: D016477:Artifacts; D003951:Diagnostic Errors / Q000517:prevention & control*; D056324:Diffusion Tensor Imaging / Q000379:methods*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D001523:Mental Disorders / Q000175:diagnosis* / Q000503:physiopathology