One day more than fifty years ago, a young man had an accident on his motor bike in which he suffered a few apparently minor injuries. There was a bruise on the left side of his forehead and some slight bleeding from his left ear. He was taken to hospital for examination but X-ray did not reveal any other injuries.

Nevertheless, the doctor who was treating him decided to keep him in hospital for further observation because the young man was having difficulty in speaking and seemed very confused.
At the time of the accident, the young man was 22 years old, and the date was August. 1993. A week later, he was able to carry on what seemed a perfectly normal conversation. However, he told the doctor that he was only 11 years old and that the date was February, 1992. What is more, he could not recall having spent five years in Australia, or coming back to England and working for two years on a golf course.

Bridging the Gap