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City Helsinki / New York / Madison / Stroke / Edinburgh / / Company General Electric / Wiley-Liss Inc. / Wiley InterScience / / Country Finland / / / Facility Taub Institute / National Institute of Neurological Disorders / Columbia University / New York State Psychiatric Institute / / IndustryTerm magnetic resonance imaging / functional imaging / functional imaging studies / structural imaging / functional magnetic resonance imaging study / neural systems / compliant protocol / imaging / recent longitudinal imaging studies4 / functional magnetic resonance imaging / button box device / functional brain imaging / / MedicalCondition intracranial artery disease / unilateral steno-occlusive disease / chronic cerebral hypoperfusion / ipsilateral transient ischemic attacks / subtle cognitive impairment / hemispheric dysfunction / sufficient dysfunction / transient ischemic attack / numbness / Reorganization Without Stroke / injury / hemiparetic stroke / Does cerebrovascular disease / Small chronic infarct / arteriovenous malformations / small vessel subcortical strokes / MS / None (TIA) None Left hemiparesis / small acute strokes / disease / severe carotid artery disease / stroke-induced hemiparesis / Patient Clinical Characteristics Patient No. Stroke TIA Symptoms Vessel VMR / acute carotid stroke / stroke / Cognitive impairment / unilateral carotid artery steno-occlusive disease / critical large-vessel disease / cerebral artery disease / MCA disease / unilateral critical large-vessel disease / large-vessel disease / / MedicalTreatment Surgery / / Organization Columbia University / National Institute of Health / Welcome Department of Imaging Neuroscience / Suellen Jones Memorial Foundation / Montreal Neurological Institute / The Richard and Jenny Levine Foundation / Department of Neurology / National Institute of Neurological Disorders and Stroke / Taub Institute / 2Cognitive Neuroscience Division / New York State Psychiatric Institute / / Person Ann Neurol / Randolph S. Marshall / Krakauer / / Position investigator / Rossini PM / Marshall / / ProvinceOrState New York / Nova Scotia / / Technology Neuroscience / tomography / MRI / magnetic resonance imaging / http / / URL www.interscience.wiley.com / http / SocialTag 
Hypoperfusion without Stroke Alters Motor Activation in the Opposite Hemisphere John W. Krakauer, MD,1 Petya D. Radoeva, BA,1 Eric Zarahn, PhD,2 Jennifer Wydra, BA,3 Ronald M. Lazar, PhD, 1,4 Joy Hirsch, PhD3,5 and Rando