Hi Clara,
I don't know, but this is not specific to longitudinal question. You don't need to warp to individual time points. The SPC is defined in each base and everything is a cross sectional analysis.
So you have a cluster in QDEC and want to do an ROI analysis. I am sure someone else knows.
Best, Martin
On 02/15/2017 04:41 PM, Clara Kühn wrote:
Dear FreeSurfer Experts,
I compared 2 groups in QDEC in spc (from pre to post) and found a cluster that survives Monte Carlo correction. Now I would like to extract the data for each participant and each time point from that cluster so that I can plot the change.
How could I do this? I tried this so far: aparcstats2table --qdec-long $SUBJECTS DIR/qdec/2016.12.06-40kids-long.qdec.table2-1.dat --hemi rh - -tablefile $SUBJECTS DIR/qdec/2016.12.08-40kids-2stagemodel/rharea-cluster-extracted.txt --parc $SUBJECTS DIR/qdec/2016.12.08-40kids-2stagemodel/rh-area again/rh-Diff-1-3-Intercept-long.area-spc/cache.th30.abs.sig.cluster.mgh
But I get this error: ERROR: The stats file /nobackup/etsch2/kids/prepost-61kids/AL3K_1.long.AL3K.base/stats/rh./nobackup/etsch2/kids/prepost-61kids//qdec/2016.12.08-40kids-2stagemodel/rh-area_again/rh-Diff-1-3-Intercept-long.area-spc/cache.th30.abs.sig.cluster.mgh.stats is not found or is too small to be a valid statsfile Use --skip flag to automatically skip bad stats files
Do I have to define my cluster as a ROI and then warp it onto the single time points? How would I do that? I have tried to draw the cluster as an ROI in QDEC but that didn't work (I could draw only on the medial surface and around the temporal sulcus). I'm guessing because I'm using a study specific template and not the fsaverage.
Any help is much appreciated! Thank you
Clara