# data[].attributes.body
According to Maguire, the role of the Hippocampus is to facilitate spatial memory, in the form of navigation. From previous studies it was impossible to know whether differences in brain anatomy are predetermined, or whether the brain is susceptible to plastic changes, in response to environmental stimulation.

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to investigate whether doing a job that demands navigational experience, and spending more years in that job affects the volume of the Hippocampus

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-16 right handed males
-mean age of 44years
-mean experience of 14.3 years
-all from London Taxi Driving

# data[].attributes.body
1. Structural MRI scans were obtained from the 16 taxi drivers and 50 non-taxi drivers
2. VBM (Voxel Based Morphometry) scans were used to calculate the amount of grey matter within the different brain regions
3. Pixel Counting scans measured 3D information from at least 26 visual 'Slices' of each Hippocampus. These were taken at 1.55mm intervals

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-only found quantitative data
-taxi drivers had bigger left and right posterior (back part) Hippocampus's but not anterior (front part)
-the amount of grey matter in the Hippocampus of taxi drivers was more than the control group
-the volume of the Hippocampus by Pixel Counting was smaller for the control group

# data[].attributes.body
-the distribution of grey matter in the Hippocampus changes with more usage
-the posterior Hippocampus appears to store spatial information about the environment and grows larger when used more

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Pro: MRI scans give consistently accurate results
Con:

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Pro: Gave Consent
Con: MRI scanners can have negative bodily affect for some people & take place in confined spaces & are noisy