Jay Jagannathan, MD | Michigan Neurosurgery Institute on Instagram: "As a neurosurgeon, this is what I want every skier + snowboarder (and every parent) to understand about concussions: Why concussions can mess with memory When your head snaps quickly (impact, collision, hard landing), the brain shifts inside the skull. That rapid movement can temporarily disrupt brain function and irritate tiny nerve connections — including areas involved in making and storing memories. What it can look like •