16 right-handed male London taxi drivers vs 50 right-handed males who did not drive taxis
Participants needed to have taken the "Knowledge" test and have a license for at least 1.5 years
Had to take an MRI and Voxelbased morphology was used to measure the density of grey matter in the brain
Results: posterior hippocampi of taxi drivers were significantly larger to those of control subjects
Anterior hippocampi were significantly smaller and the volume of the right posterior hippocampi correlated with the amount of time spent as a taxi driver
I'm a sea horse
The posterior hippocampus seems to be involved when previously learned spatial information is used, the anterior hippocampal region may be more involved during the encoding of new environmental layouts.