hi, expert,
In a paper named "MRI of hippocampal volume loss in early Alzheimer's disease",
I can see the average volume of hippocampus is 2133mm^3 for 279 normal controls
with std=25 as well as 1631mm^3 for 330 AD subjects with std=34.
However, in the aseg.stats, the volume of a normal subject is roughly 4000mm^3
or so, why the hippocampus volume of two samples differ so greatly due to age
effect ( nearly about two times as much as the volume of the study).
Thanks!
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