Dear all

 

I have a problem with an ROI analysis I am trying to run in SPM8. Here is what I want to do:

I want to check which voxels are NOT commonly activated in two contrasts (derived from different models) in predefined ROIs.

So essentially I want to mask contrast1 with contrast2 using the exclusive function and then limit this to the ROIs, ie an inclusive mask of an ROI-image from WFU_Pickatlas.

 

Unfortunately WFU_Pickatlas doesn’t work properly on the version of SPM8 we have (it doesn’t load the ROI-analysis prompt), however I thought I could get around this by just entering the ROI_image I have previously saved from Pickatlas in the SPM8 masking command. But this means I have to mask contrast1 using an EXCLUSIVE mask with contrast2 and an INCLUSIVE mask with the ROI. How do I do this? I can select two images, but can only apply them either both as an inclusive or both as an exclusive mask.

 

Any help would be greatly appreciated!

 

Yours sincerely,

Bettina Studer

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Bettina Studer

PhD Student

Department of Experimental Psychology

University of Cambridge

Downing Street, Cambridge, CB2 3EB, UK.

Tel (+44) 01223 333560

Email [log in to unmask]