Joshua Ewen, M.D.
Kennedy Krieger Institute
707 N. Broadway
Baltimore, MD 21205
Dr. Joshua Ewen is a pediatric neurologist, developmentalist and electroencephalographer. He is director of the Clinical Neurophysiology Laboratory and Research Neurophysiology Laboratory at the Kennedy Krieger Institute and an assistant professor in both the Department of Neurology at the Johns Hopkins School of Medicine and the Department of Psychological and Brain Sciences at the Johns Hopkins University.
Dr. Ewen attended Brown University and Tulane University School of Medicine, from which he graduated in 2000. He received training in general pediatrics at Cincinnati Children's Hospital Medical Center and then was one of the first graduates of the Kennedy Krieger/Johns Hopkins program in neurodevelopmental disabilities. He subsequently took a year of training inspecialized training in clinical neurophysiology/epilepsy (Johns Hopkins). He is currently a neurologist at Kennedy Krieger, where he sees patients with epilepsy and co-morbid developmental disabilities. He also interprets clinical EEGs at Kennedy Krieger’s Clinical Neurophysiology Laboratory. A large portion of his effort is focused on research into the cognitive alterations in developmental disabilities.
Dr. Ewen's research involves the use of behavioral and EEG-based techniques to study developmental disabilities and basic questions within psychology and neuroscience. His current primary work focuses on the borderlands between cognition and motor control in autism, but he also has ongoing research in ADHD. Using approaches from experimental cognitive psychology, his laboratory’s general approach is to identify specific cognitive processes that are involved in developmental disabilities, and then to explore the physiological underpinnings of those alterations using EEG.
As a seizure and clinical EEG specialist, Dr. Ewen also researches epilepsy and EEG abnormalities in a range of developmental disabilities, including autism and Rett syndrome.
The Research Neurophysiology Laboratory at the Kennedy Krieger Institute also collaborates with other investigators throughout the greater Johns Hopkins campus who want to employ EEG methods, including event-related potentials (ERPs) in their research. As one example, extensive collaborations with the Johns Hopkins Department of Psychological and Brain Sciences have yielded new insights on how the brain uses attention to focus on certain features of an object, such as color.
Ewen JB, Shapiro BK. Disorders of Attention and Learning in Children with Neurodevelopmental Disabilities. Seminars in Pediatric Neurology. 2005; 12(4): 229-41.
Vasa RA, Mostofsky SH, Ewen JB. The disrupted connectivity hypothesis of autism spectrum disorders: Time for the next phase in research. Biological Psychiatry: Cognitive Neuroscience and Neuroimaging 2016;1:245-252.. PMID pending
Book Chapters, Monographs:
Ewen JB, Shapiro BK. Specific Learning Disabilities. In: Accardo, PJ, editor. Developmental Disabilities in Infancy and Childhood, 3ed. Baltimore: Paul H. Brookes Publishing Co. 2008.
Ewen JB. Convulsions. In: Levy, M, editor. Patient Encounters: The Neurology and Psychiatry Work-Up. New York: Lippincott Williams & Wilkins. 2009.
Suskauer SJ, Ewen JB. Encephalitis. In: Nelson M, editor. Rehabilitation Medicine Quick Reference: Pediatrics. New York: Demos Medical Publishing. 2010.
Ewen JB. Angelman Syndrome. In: Gilman, S., editor. MedLink Neurology. San Diego: MedLink Corporation. 2004-2011.
Ewen JB, Mostofsky SH. Procedural memory. In: Volkmar Fred R. (ed). Encyclopedia of Autism Spectrum Disorders. New York: Springer. 2012.
Ewen JB, Mostofsky SH. Sensory-Motor Integration. In: Foxe, JJ and Molholm, S. Multisensory Integration and Sensory Regulation in Autism. Cambridge: MIT Press (in press).
Ewen JB, Beniczky S. Validating Biomarkers and Diagnostic Tests in Clinical Neurophysiology: Developing Strong Experimental Designs and Recognizing Confounds. In: Schomer, D, Lopes da Silva, F (eds.) Niedermeyer’s Electroencephalography (seventh edition). Oxford: Oxford University Press (in press).
“If Your Child Has Seizures” (brochure for parents of children with newly diagnosed epilepsy), editor. Distributed in the Baltimore community (with plans for broader distribution) 2013
Parent Tips: “Seizures and Autism,” co-author, Pathfinders for Autism Website. 2015
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