G
George W. Arana
Researcher at Medical University of South Carolina
Publications - 71
Citations - 4696
George W. Arana is an academic researcher from Medical University of South Carolina. The author has contributed to research in topics: Dexamethasone suppression test & Apomorphine. The author has an hindex of 30, co-authored 71 publications receiving 4569 citations. Previous affiliations of George W. Arana include Veterans Health Administration & United States Department of Veterans Affairs.
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Journal ArticleDOI
The Dexamethasone Suppression Test for Diagnosis and Prognosis in Psychiatry: Commentary and Review
TL;DR: A modified dexamethasone suppression test (DST) has had unprecedented evaluation among biologic tests proposed for clinical use in psychiatry, but it has not proved to reflect pathophysiologic changes at the level of the central nervous system or pituitary, and tissue availability of dexamETHasone itself may contribute to test outcome.
Journal ArticleDOI
A controlled trial of daily left prefrontal cortex TMS for treating depression
Mark S. George,Ziad Nahas,Ziad Nahas,M. Molloy,Andrew M. Speer,Nicholas C. Oliver,Xing Bao Li,George W. Arana,S. Craig Risch,James C. Ballenger +9 more
TL;DR: Daily left prefrontal TMS for 2 weeks significantly reduced depression symptoms greater than did sham and active TMS subjects had significantly greater improvement on the Beck Depression Inventory as well as the Hamilton Anxiety Rating Scale.
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The predictive power of diagnostic tests and the effect of prevalence of illness
TL;DR: A useful scheme for organizing clinical test data is developed so as to permit simple calculations of the sensitivity, specificity, and predictive power of medical tests.
Journal Article
Neural correlates of speech anticipatory anxiety in generalized social phobia.
Jeffrey P. Lorberbaum,Samet Kose,Marvin Johnson,George W. Arana,Lindsay K Sullivan,Mark B. Hamner,James C. Ballenger,R. Bruce Lydiard,Peter S Brodrick,Daryl E. Bohning,Mark S. George +10 more
TL;DR: BOLD-fMRI brain activity while generalized social phobics and healthy controls anticipated making public speeches showed greater subcortical, limbic, and lateral paralimbic activity and less cortical activity in regions important in automatic emotional processing.
Journal ArticleDOI
Prevalence of posttraumatic stress disorder in Veterans Affairs primary care clinics.
Kathryn M. Magruder,Kathryn M. Magruder,B. Christopher Frueh,B. Christopher Frueh,Rebecca G. Knapp,Lori L. Davis,Mark B. Hamner,Mark B. Hamner,Renee H Martin,Paul B. Gold,George W. Arana,George W. Arana +11 more
TL;DR: The prevalence of PTSD using Diagnostic and Statistical Manual of Mental Disorders-Fourth Edition diagnostic criteria in Veterans Affairs (VA) primary care settings and associated sociodemographic characteristics and comorbidities was estimated to be 11.5%.