Dr. Walker has been a Clinical Neuropsychologist at the Ottawa Hospital for over 20 years. She is also a Clinician Investigator with the Ottawa Hospital Research Institute and co-leads the Neurodegeneration Pillar and the Multiple Sclerosis Research Group with the University of Ottawa Brain and Mind Research Institute. Her research interest is in cognitive health in people living with multiple sclerosis. Specifically, her Cognitive Health in MS Research Lab focuses on cognitive fatigability, the cognitive impact of stem cell therapies, assessment and longitudinal evaluation of cognition, and the relationship between cognition and biomarkers of disease activity.