Andrew Huberman· PhD
I recall the the London taxi drivers were considered the um you know the world heavyweight champions of of uh memory and there were some decent brain imag studies of their hippocamp ey and indeed they have amazing spal memory of the city of London um now that's probably changed because of Google Maps there there's no need to rely on on um internal memory stores when you have no you still actually there's still a now you can drive you know these ridea apps but for London taxi drivers they still have to go through in some ways it's almost like a hazing it's called the knowledge and if you if you are visiting London you will see these strange guys who are going around on mopeds and they just have this huge kind of map in front of them and they are doing the knowledge which is that they are learning exquisitly the entire road map of London and what they found in those studies was that the size of the hippocampus this memory structure related to fact-based memories and also spatial memories was significantly larger in cab drivers than it was in matched controls