Hi Martin, I would like to compare also a Control vs. an Experimental group (pre-post), but instead of using ROIs, I am interested in a whole-brain paired t-test analysis between the two groups. Which data should I take? Would it be possible to process ?.long.base with qcache and take the "rh.thickness.fwhm20.fsaverage.mgh" files? Or maybe could I use QDEC with ?.long.base after qcache?
Thank you, Yolanda 2012/4/12 Martin Reuter <mreu...@nmr.mgh.harvard.edu> > Yes, just extract the stats on each time point as done in a cross > sectional analysis (but instead on the ?.long.base directories) do a > paired t (or a t on the difference) to see if there is increase or > decrease. > > If you look at one of the reported ROI's (e.g. caudate volume, or > pre-central thickness) you can directly get the values from the stats > files. If you have your own ROI's you need to use segstats to get the > stats for them. > > Cheers, Martin > > On Wed, 2012-04-11 at 19:19 +0200, Dídac Vidal wrote: > > Hi everybody, > > I have a question about FS longitudinal post-processing. Currently I > > obtained some corrected results comparing a Control vs. an > > Experimental group (pre-post). > > What i would like to know is if there's a thinning in the control > > group or a increase in the thickness of the experimental group. > > I tought in create a label and extract the individual values of both > > timepoints and then do a t test in order to see if the mean differs to > > 0. > > How I can do that?; There is an easier way to do it? > > Thanks in advance > > > > -- > > Dídac Vidal Piñeiro > > > > Dept. Psychiatry and Clinical Psychobiology > > Faculty of Medicine > > University of barcelona > > > > > > _______________________________________________ > > Freesurfer mailing list > > Freesurfer@nmr.mgh.harvard.edu > > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > The information in this e-mail is intended only for the person to whom it > is > addressed. If you believe this e-mail was sent to you in error and the > e-mail > contains patient information, please contact the Partners Compliance > HelpLine at > http://www.partners.org/complianceline . If the e-mail was sent to you in > error > but does not contain patient information, please contact the sender and > properly > dispose of the e-mail. >
_______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer The information in this e-mail is intended only for the person to whom it is addressed. If you believe this e-mail was sent to you in error and the e-mail contains patient information, please contact the Partners Compliance HelpLine at http://www.partners.org/complianceline . If the e-mail was sent to you in error but does not contain patient information, please contact the sender and properly dispose of the e-mail.
