[Freesurfer] Creating functional ROI

Dear FreeSurfer community, I am new to FreeSurfer and I apologize in advance if my questions are too naiive. I have some nii files for both a localizer and an experiment. I would like to find some ROIs in the localizer, get their coordinates, create a mask, and then find those regions on the expe

[Freesurfer] OptSeq nullmax

Hi all, Is there a rule that let me avoid having the error message could not force null max? -- ntp 200 --tr 2.5 --psdwin 0 20 2.5 --ev 1 3 15 -ev 2 3 15 -ev 3 3 15 --ev 4 3 15 ---ev 5 3 15--tnullmin 2 --tnullmax 4.5 .. Thanks AS ___ Freesurfer maili

[Freesurfer] (no subject)

with_focb_100_use_this_6_2.log Description: Binary data with_focb_100_use_this_6_2.sum Description: Binary data with_focb_100_use_this_6_2.xtxideal.mat Description: Binary data with_focb_100_use_this_6_2-001.par Description: Binary data ___ Frees

[Freesurfer] OptSeq2 eff and first order and contrast

Hello all, A question regarding the usage of Optseq2 I have this command line optseq2 --ntp 200 --tr 2.5 --psdwin 0 15 2.5 --ev ev20 2.5 20 --ev ev40 2.5 20 --ev ev60 2.5 20 --tnullmin 5 --tnullmax 7.5 --nkeep 1 --o OptSeq_TRIALS/3_null9_6 --nsearch 1 Now the efficiency tha I get is around

Re: [Freesurfer] OptSeq first time

Correction This is the lats code : optseq2 --ntp 140 --tr 3 --psdwin 6 15 3 --ev ev20 3 20 --ev ev40 3 20 --ev ev60 3 20 --nkeep 3 --o OptSeq_TRIALS/trial_squ --nsearch 1 So The duration is 3 seconds for each and each repeat it 20 times. What I need is to change/add the ISI to be 7 + or - 1