Hi A British man developed anterograde amnesia after a root canal, so he can’t remember anything for longer than 90 minutes and he can’t make new memories. Also, he thinks it’s the day of his root canal every time he wakes up – March 14, 2005 – which is why he must read a detailed note every morning.
March 14, 2005, was a day like any other for William, a 38-year-old member of the British Armed Forces stationed in Germany. He got up, went to the gym, played volleyball, and answered emails from his office. By 2:40pm, he was sitting in a dentist’s chair for a root canal. And that’s essentially where he’s been ever since—at least in his mind.