Term
|
Definition
| 16 right-handed male taxi drivers and 16 right-handed male non-taxi drivers - age matched - avg age 44, liscensed for at least 18 months |
|
|
Term
|
Definition
| to investigate whether environmental demands could effect the structure of the brain; if spatial navigation effects the volume of taxi-drivers hippocampi |
|
|
Term
| what was the method and the IV and DV? |
|
Definition
natural experiment
IV: taxi driver or non-taxi driver
DV:structure and volume of hippocampi |
|
|
Term
| name the control in the procedure? |
|
Definition
| the researcher conducting analysis was unaware of whether the MRI scans were from taxi drivers or not - single blind |
|
|
Term
| what was the comparison data base? |
|
Definition
| MRI scans of 50 righthanded, healthy male non-taxi drivers were analysed to establish data base of 'average hippocampi' |
|
|
Term
| how were the brain scans analysed? |
|
Definition
| voxel based morphometry and pixel counting |
|
|
Term
|
Definition
| uses radio waves to obtain 3D picture of the brain |
|
|
Term
|
Definition
| the volume of the posterior hippocampus and time spent as taxi driver |
|
|
Term
| what did voxel based morphology show in taxi drivers? |
|
Definition
| increased volume of grey matter in both left and right hippocmapi of taxi drivers |
|
|
Term
| what did pixel counting show? |
|
Definition
| no significant difference between the overall volume of hippocampus between taxi and non-taxi drivers |
|
|
Term
| what were the regional differences? |
|
Definition
| the posterior hippocampus was greater in the taxi-drivers, whereas the anterior hippocampi was greater in the non-taxi drivers |
|
|
Term
| what do the results indicate? |
|
Definition
| redistribution of grey matter in the hippocami |
|
|
Term
| what did the correlation show? |
|
Definition
| the right posterior hippocampi increased as the time spent as a taxi driver increased - positive correlation |
|
|
Term
| what was the main conclusion? |
|
Definition
| the structure of the brain changes in response to environmental demands |
|
|
Term
| what do the conclusions have implications for? |
|
Definition
| normal activity can induce changes in the brain so rehabilitation after brain injury |
|
|
