Dear List,
I am conducting a VBM analysis.
I like to know, in which regions of the brain gray matter volume is
correlated with my variable of interest 'IV'.
I assume that age and gender might influence the local gray matter
volume as well, therefore I would like to control
for both of these variables.
Thus, I set up a multiple regression model with IV, age and gender as
regressors (in this order). Now, I am unsure of how to define the
appropriate contrast.
Is it "1 0 0" or rather "1 1 1" - and what might be the semantic
difference between these two?
Thank you very much for any help on this issue!
All the best,
-Lucas
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