Amnesia:An impairment to or lack of memory.Antegradeamnesiarefers to a lack of memory of events occurring after a traumatic event, whereas retrograde amnesia refers to lack of memory of events that occurred before the event. From 大脑和神经系统资源 What Is Myasthenia Gravis? Advice for Living With Myasthenia Gravis Unpredictable Days With Myasthenia Gravis Featured Centers What Are the Best PsA Treatments for You? Understanding Biologics 10 Things People With Depression Wish You Knew Health SolutionsFrom Our Sponsors