Neuroscientists studied the brains of London cab drivers before, during, and after they started studying for the test called The Knowledge. They found that after studying for this test, brain images showed that the posterior hippocampus in these individuals had:未知题型
A
Grown physically larger
B
Shrunk physically smaller
C
Stayed the same in size
D
None of the above

Question

Neuroscientists studied the brains of London cab drivers before, during, and after they started studying for the test called The Knowledge. They found that after studying for this test, brain images showed that the posterior hippocampus in these individuals had:未知题型

A

Grown physically larger

B

Shrunk physically smaller

C

Stayed the same in size

D

None of the above

BlackTom AI · Accepted Answer

The question asks about what happens to the posterior hippocampus after London cab drivers studied for The Knowledge. 
Option 1: 'Grown physically larger' aligns with research showing that acquiring extensive spatial navigation experience can increase the volume of the posterior hippocampus. This reflects neuroplastic adaptations to complex navigational learning. 
Option 2: 'Shrunk physically smaller' contradicts the typical finding that more navigation experience leads to growth, not reduction, in this brain region. It would imply a loss of volume, which is not supported by the study pattern described. 
Option 3: 'Stayed the same in size' would suggest no structural change despite intensive learning, but evidence from this line of research indicates a measurable volumetric increase in the posterior hippocampus with extensive navigational training. 
Option 4: 'None of the above' would be incorrect if Option 1 is true, since there is a described change (growth) in the posterior hippocampus. 
In summary, the observed neuroanatomical change among London cab drivers after studying for The Knowledge is a growth in the posterior hippocampus, reflecting the brain’s adaptation to spatial-matical navigation demands. The other options either describe the opposite change, no change, or assert no relevant effect, which do not match the experimental findings.