[Marsbar-users] confusion about extracted values from Marsbar
Status: Beta
Brought to you by:
matthewbrett
From: LiuKarl <rem...@ho...> - 2011-10-17 21:19:00
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Hello, Matt In our experiment design, we asked the subjects to view faces of different emotions. We also have a behavioral measure outside scanner. Now we are particularly interested in the correlation between brain activity to fearful faces and the behavior measure. In the 1st level analysis, we have created a contrast image for viewing fearful faces (con1.img) for each subject. Then in the 2nd level analysis, we put in the contrast images and behavioral measure for each subject and found some significant correlation blobs. Now I want to make a scatterplot of the correlation from one blob as an illustration (ideally x-axis is behavioral measure and y-axis is the parameter estimate for fear). How can I can extract the value of functional ROI from con1.img? Can I choose the default spm file from my 2nd level analysis? What is the values I extract if I choose this spm file: the value from contrast images or some correlation coefficient between parameter estimate and behavioral measure? Many thanks in advance Karl |