plasticity

plasticity
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  • Experiment included: 16 right­handed male London taxi drivers and 50 right­handed males who di do not drive taxis
  •  It was also a single­blind study ­ that is, the researcher did not know whether she was  looking at the scan of a taxi driver or a control
  • The study is correlational in nature as the IV is not  manipulated by the researcher. The researchers were looking  to see if there was a relationship between the number of years o of driving a  taxi and the anatomy of one's brain. 
  • pixel counting revealed that the posterior hippocampi of  taxi drivers were significantly larger relative to those of  control subjects and the anterior hippocampi were significantly  smaller
  • >
  • the posterior hippocampus is involved when previously  learned spatial information is used, whereas  the anterior hippocampal region may be more  involved during the encoding of new  environmental layouts.
  • Some might argue that those with larger  hippocampi might be more spatially talented and thus chose to be taxi drivers; this does not explain  the correlation between the size of the hippocampus and the number of years driving.
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