help > art batch before 1st level analyses?
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Nov 8, 2014  02:11 PM | Kyle Burger
art batch before 1st level analyses?
Hi all,
I am hoping to batch the artifact detection tool before I run first level analyses (I'm looking at ~300 subjects).  art_works great, but it stems from the SPM.mat output for first level analyses and also automatically picks up my smoothed files.  After reading around it appears that it is better to run the art detection on the unsmoothed files. I hoping to batch that and then take the motion parameters and outliers and apply them during first level analyses.    
Any thoughts?
Nov 9, 2014  12:11 PM | L Tang
RE: art batch before 1st level analyses?
You could probably change the parameters in the art_batch.m so that every time it will pick the parameters and it will automatically apply them in all the spm.mat you chose and save the outliers_xxx.mat files which you can use in the subsequent analysis. Essentially you can specify 1st level model without estimating it, run art_batch, come back, plug back outliers_xxx.mat and then estimate. But that is for when you have spm.mat for typically smoothed data.
For using unsmoothed data, it might be more complicated than that. You might need to either put all the unsmoothed in the spm.mat just so art_batch can pick up on them or feed the wrfxxx.img list directly to art.m itself. I have not tried these. But I think the latter involves in changing parameters in art.m itself or build a .cfg file.