I was performing a 3-point turn on a residential street. While reversing during the turn the Automatic Emergency Braking enabled and slammed on the brakes, bringing the car to a complete halt instantly. This caused my head to hit the headrest with enough force that I have headaches and brain fog the next day, indicating a concussion. I was 10 feet from the nearest parked vehicle when reversing; the AEB kicked in erroneously. This is not the first time that Tesla's AEB has erroneously and dangerously engaged while I was driving.