The contrasts are going to be created automatically. These will be: fund - stands for "fundamental" - this is the F-test of the sine and cosine components, probably what you want fund-sin -- t-test of the sine component (this may also be useful) fund-cos -- t-test of the cosine component (think of this like the derivative when you assume a shape) harm -- F test on the harmonics (probably not too useful)
It is going to assume that the first condition is ON. This does not matter for the F-tests above, but will affect the sign of the sine component. doug Chindhuri Selvadurai wrote: > Hello, > > We are trying to set up the analysis for a periodic design alternating > between 30s rest and 30s active condition. Because abblocked doesn't > require a paradigm file, how do we specify which condition comes first > (rest or active)? We understand that abblocked expects that the > conditions will be alternating. > > Also, how do we set up the -a and -c weighting conditions if we are using > abblocked, since it doesn't have a paradigm file? How do we specify the > arguments for this command? Should we instead be using the -ncond and > -wcond commands? > > Best, > > Chindhuri Selvadurai > > Psychiatric Neuroimaging, Manoach Lab > Martinos Center for Biomedical Imaging, MGH > Phone: (617)726-0307 > > > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer > > > -- Douglas N. Greve, Ph.D. MGH-NMR Center gr...@nmr.mgh.harvard.edu Phone Number: 617-724-2358 Fax: 617-726-7422 Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting FileDrop: www.nmr.mgh.harvard.edu/facility/filedrop/index.html _______________________________________________ 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.
