Dear SPMers.
Now I'm running a VBM analysis(using Brain MRI)of schizophrenia and normal
controls to compare grey and white matter volume respectively.
When I come to the basic models (chosing two sample t-test) stage, I select
the following
no grand mean scaling
threshold masking absolute 0.05
implicit mask (ignore zero's) YES
explicity mask images NO
Global calculation OMIT
Are these options correct?
and then, when I compare schizoprenic's white matter vol. with controls',
above options are right, too ?
Thanks in advance
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