Hi again,

Sorry, I didn't list all the commands I have been using:

preproc-sess -s $subj -fsd bold -sliceorder odd -surface fsaverage lhrh -mni305 
-fwhm 3 -per-run -force (and with -no-subcort-mask in v5.3.0 on snowleopard)


mkanalysis-sess -fsd bold -stc odd -mni305 2 -fwhm 3 -paradigm para.para 
-nconditions 5 -gammafit 2.25 1.25 -TR 2 -analysis analysis-sm3.mni 
-event-related -refeventdur 2 -polyfit 1 -mcextreg -per-run -rlf runlist 
-timeoffset -1.0 -refeventdur 2 -force


mkcontrast-sess -analysis analysis-sm3.mni -contrast visresp -a 1 -c 2

selxavg3-sess -s $subj -analysis analysis-sm3.mni

Then I look at the mask.nii created in bold/analysis-sm3.mni overlaid on 
mni305.cor.mgz (I view the overlay with freeview). 


The overlaid mask.nii from v5.3.0 looks the same as mask.nii from v5.2.0 only 
if I use -no-subcort-mask in v5.3.0.


Leila




________________________________

Hi,

I would like to verify (as a sanity check and to make sure that I'm on the 
right track in my analysis) that preproc-sess runs with -no-subcort-mask by 
default in freesurfer-Darwin-lion-stable-pub-v5.2.0, but with -no-subcort-mask 
turned off by default in stablev5.3.0 on snowleopard.

I first did an MNI305 analysis in v5.2.0 (mountain lion) and was able to see my 
slices very nicely overlaid on the average/mni305.cor.mgz brain. However, the 
same analysis in v5.3.0 (snowleopard) didn't overlay on
 the brain in a sensible way, and only after I searched the mailing list did I 
realize that I needed to use -no-subcort-mask. Using this option gave me the 
same results as with v.5.2.0. Searching through 
freesurfer/fsfast/bin/preproc-sess I don't see where this flag is set by 
default to -no-subcort-mask in v5.2.0 (in fact, it seems that ApplySubCortMask 
= 1; by default). So I'm pretty confused, and I'm just not sure that I'm doing 
things the right way...

Thanks in advance,
Leila
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