Dear Experts,
I read in many papers that authors after performing a statistical parametric
mapping (spm) analysis go to the maxima voxel, plot betas or %sc for each
experimental condition (including experimental conditoions used in spm
analysis) and perform anova or t-test on the %sc. In my opinion the results
obtained with anova or t-test on the %sc are baiased.
My question is: Are the results biased?
Thank you in advance.
Federico.
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