Holland Bloorview Kids Rehabilitation Hospital View Institution's Website 4 articles published in JoVE Medicine Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology Melissa Paniccia1, Tim Taha2, Michelle Keightley1,3, Scott Thomas2, Lee Verweel1, James Murphy1, Katherine Wilson1, Nick Reed1,3,4 1Concussion Centre, Bloorview Research Institute, Holland Bloorview Kids Rehabilitation Hospital, 2Faculty of Kinesiology and Physical Education, University of Toronto, 3Rehabilitation Sciences Institute, Faculty of Medicine, University of Toronto, 4Department of Occupational Science and Occupational Therapy, Faculty of Medicine, University of Toronto We demonstrate a 24 h heart rate recording methodology to evaluate the influence of concussion across the recovery trajectory in youth athletes, within an ecologically valid context. Bioengineering A Method for Evaluating Timeliness and Accuracy of Volitional Motor Responses to Vibrotactile Stimuli Matthew J. Leineweber1, Sam Shi2, Jan Andrysek1,2 1Bloorview Research Institute, Holland Bloorview Kids Rehabilitation Hospital, 2Institute of Biomaterials and Biomedical Engineering, University of Toronto This article describes a technique for applying vibrotactile stimuli to the thigh of a human participant, and measuring the accuracy and reaction time of the participant's volitional response for various combinations of stimulation location and frequency. Medicine A Multi-Modal Approach to Assessing Recovery in Youth Athletes Following Concussion Nick Reed1,2,3, James Murphy1, Talia Dick1, Katie Mah3, Melissa Paniccia3, Lee Verweel3, Danielle Dobney3, Michelle Keightley1,2,3 1Bloorview Research Institute, Holland Bloorview Kids Rehabilitation Hospital, 2Department of Occupational Science and Occupational Therapy, University of Toronto, 3Graduate Department of Rehabilitation Science, University of Toronto This article provides an overview of a multi-modal approach to assessing recovery following concussion in youth athletes. The described protocol uses pre- and post-concussion assessment of performance across a wide variety of domains and can inform the development of improved concussion rehabilitation protocols specific to the youth sport community. Medicine An Investigation of the Effects of Sports-related Concussion in Youth Using Functional Magnetic Resonance Imaging and the Head Impact Telemetry System Michelle Keightley1,2,3,4,5, Stephanie Green1, Nick Reed1, Sabrina Agnihotri1, Amy Wilkinson3, Nancy Lobaugh6,7 1Graduate Department of Rehabilitation Science, University of Toronto, 2Occupational Science and Occupational Therapy, University of Toronto, 3Department of Psychology, University of Toronto, 4Bloorview Kids Rehab, 5Toronto Rehab, 6Cognitive Neurology, Sunnybrook Health Sciences Centre, 7Faculty of Medicine, University of Toronto This article provides an overview of a multi-modal approach to mild traumatic brain injury diagnosis and recovery in youth. This approach combines neuropsychological testing with functional magnetic resonance imaging and the Head Impact Telemetry System to monitor the relationship between head impacts and brain activity during cognitive testing.