London: A Briton who can only remember up to 90 minutes and bears a striking similarity to the memory loss presented in movies like "Groundhog Day" and "Memento" may be a unique case never seen before, say psychologists from University of Leicester.

The 38-year-old fit and healthy man suffered memory loss after local anaesthetic and root-canal treatment. For the past decade he can only remember up to 90 minutes and awakes every morning thinking it is the same day he went to the dentist.