Something like this happened to me. My wife and I were in a serious car crash; we were almost entirely uninjured, but I apparently lost the ability to form new

Something like this happened to me. My wife and I were in a serious car crash; we were almost entirely uninjured, but I apparently lost the ability to form new memories for several hours. I also temporarily forgot some older memories and permanently forgot almost everything that happened over the past 36-ish hours. The doctors checked me VERY carefully for brain injury, including a CAT scan (so I'm told!) but couldn't find anything, not even a surface bruise. Professionals I have met over the years have hypothesized either a psychological effect due to shock or some minor, hard-to-detect internal brain damage just from it sloshing around inside my skull. The most interesting part, for me, was that while I was in hospital I was visited by a guy I'd met for the first time the previous day, during the lost 36 hours. I instantly remembered his name but was also quite sure I'd never seen him before. That was weird.