Dear FSL experts
This link in FSL wiki http://fsl.fmrib.ox.ac.uk/fsl/fslwiki/GLM#Single-Group_Average_with_Additional_Covariate
explain how to create design matrix for a voxel wise correlation analysis between clinical scale ( please correct me if the terms used to describe the analysis are not accurate ) and the whole brain.
If we replace the clinical scale in the model with FA values derived from an ROI. In want to know if the concept of the analysis still valid?
Thanks!
Jon
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