In the command condition impaired MS patients produced slower selected intra-components and slower 3 rd and 4 th quartile latencies (p<0.032) compared to other groups. Subsequent analyses assessed dCDT parameters and other neuropsychological tests related to deficits in processing speed and other neurocognitive functions. dCDT variables included intra-component latencies or the time elapsed between clock drawing components (i.e., time between last element drawn followed by the first clock hand) inter-digit latency (i.e., average time between drawing numbers and quartile drawing time (i.e., total drawing time divided into four equal segments. MS and normal control (NC) clock drawing performance was initially scored using a 10-point scale where NC test performance classified MS patients into impaired versus non-impaired clock drawing groups. The current research assessed how digital clock drawing test (dCDT) parameters compliment and convey additional information in conjunction with traditional clock drawing scoring methods in patients with multiple sclerosis (MS). Libon, Ph.D, Department of Neurology, Drexel University College of Medicine, 245 North 15th Street, Philadelphia, PA, 19102, USA, Tel: 21 Email: Price 6, Rhoda Au 7, Rod Swenson 8 and Kelly Davis Garrett 9 1Department of Neurology, Drexel University College of Medicine, Philadelphia, USA 2The Lahey Clinic, Burlington, USA 3MIT Computer Science and Artificial Intelligence Laboratory, Cambridge, USA 4Independent Practice, USA 5Department of Psychiatry, University of Illinois, Chicago, USA 6Department of Health and Clinical Psychology, Boston University School of Medicine, USA 7 Boston University School of Medicine and the Framingham Heart Study/ National Heart Lung and Blood Institute, Framingham, USA 8Department of Neuroscience, University of North Dakota Medical School, USA 9Intermountain Healthcare & Center on Aging, University of Utah, USA * Corresponding Author:ĭavid J. Rife 1, Graham Wicas 1, Melissa Lamar 5, Catherine C. Tabby 4, Joel Eppig 1, Christine Nieves 1, Aaron Bloch 1, Jacqueline B. View PDF Download PDF Deficits in Processing Speed and Decision Making in Relapsing-Remitting Multiple Sclerosis: The Digit Clock Drawing Test (dCDT) David J.
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