Hello AFNI experts
I am working in an emotional fMRI task. I am interested to see the activations in different contrasts: faces vs shapes, anger vs neutral, fear vs neutral, fear+anger vs neutral.
I have the stats for the faces vs shapes, anger vs neutral, fear vs neutral, which are activation maps generated running 3dDeconvolve (the bucket output).
I made 3dcalc -a file’’ -expr “a*step(a)” -prefix new_file.nii to calculate the voxels greater than 0 considering that Im interested in faces>shapes, anger>neutral, fear>neutral. Please correct me if Im doing something wrong.
Now I want to calculate the anger+fear activation map but I am confused how to average this. Could you please provide me any advices?