sorry, there should be an fsig.nii.gz which is the F test of the real and imaginary. That sounds like what you are asking for
On 12/04/2013 12:19 PM, Cesar Echavarria wrote: > To clarify, I am piggy-backing on the retinotopic analysis to map out > orientation preference with the travelling-wave method. We presented > subjects with a rotating grating and right now I am simply interested > in finding the voxels that have significant activity in response to > any orientation. Now, when I load the sig.nii file under the 'polar' > folder with MATLAB I see that each voxel has 2 values. I understand > that these are the p-values for the real and imaginary components of > the signal. Is there a way to put these 2 values together for my > purposes? Is there a file somewhere in the pipeline that will give me > the values I am looking for? > > Thanks you for your help > > Cesar > > > On Wed, Dec 4, 2013 at 10:14 AM, Douglas N Greve > <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu>> wrote: > > > They are compared against 0 (ie, no change from baseline). The > negatives just mean that the real component was negative > doug > > > > On 12/03/2013 06:21 PM, Cesar Echavarria wrote: > > > So I want to figure out which voxels were modulated > significantly by the orientation of our stimuli. Is this the > right file to look at? If so what are the real and imaginary > components compared against? I want to know to make sense of > the negative values. > > On Dec 3, 2013 5:52 PM, "Douglas N Greve" > <gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>>> wrote: > > It is the -log10(pvalue) where pvalue is the p-value > from the F-test > of the real and imaginary components > doug > > > > > > On 12/03/2013 05:41 PM, Cesar Echavarria wrote: > > Hi freesurfers, > > > > I conducted a retinotopic analysis for one of my > subjects. I was > > wondering if any of you knew what is represented by the > values > in the > > sig.nii file under the 'polar' directory that the > process puts out. > > > > I appreciate your help! > > > > Cesar > > > > > > _______________________________________________ > > Freesurfer mailing list > > Freesurfer@nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu> > <mailto:Freesurfer@nmr.mgh.harvard.edu > <mailto: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 <mailto:gr...@nmr.mgh.harvard.edu> > <mailto:gr...@nmr.mgh.harvard.edu > <mailto:gr...@nmr.mgh.harvard.edu>> > Phone Number: 617-724-2358 <tel:617-724-2358> > <tel:617-724-2358 <tel:617-724-2358>> > Fax: 617-726-7422 <tel:617-726-7422> <tel:617-726-7422 > <tel:617-726-7422>> > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 > www.nmr.mgh.harvard.edu/facility/filedrop/index.html > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > > Outgoing: > ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ > > _______________________________________________ > Freesurfer mailing list > Freesurfer@nmr.mgh.harvard.edu > <mailto:Freesurfer@nmr.mgh.harvard.edu> > <mailto:Freesurfer@nmr.mgh.harvard.edu > <mailto: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. > > > -- > Douglas N. Greve, Ph.D. > MGH-NMR Center > gr...@nmr.mgh.harvard.edu <mailto:gr...@nmr.mgh.harvard.edu> > Phone Number: 617-724-2358 <tel:617-724-2358> > Fax: 617-726-7422 <tel:617-726-7422> > > Bugs: surfer.nmr.mgh.harvard.edu/fswiki/BugReporting > <http://surfer.nmr.mgh.harvard.edu/fswiki/BugReporting> > FileDrop: https://gate.nmr.mgh.harvard.edu/filedrop2 > www.nmr.mgh.harvard.edu/facility/filedrop/index.html > <http://www.nmr.mgh.harvard.edu/facility/filedrop/index.html> > Outgoing: > ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ > > > > > -- > Cesar Echavarria > Research Assistant > Martinos Center for Biomedical Imaging, Harvard-MGH > Brain & Cognitive Sciences | MIT 2012 -- 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: https://gate.nmr.mgh.harvard.edu/filedrop2 www.nmr.mgh.harvard.edu/facility/filedrop/index.html Outgoing: ftp://surfer.nmr.mgh.harvard.edu/transfer/outgoing/flat/greve/ _______________________________________________ Freesurfer mailing list Freesurfer@nmr.mgh.harvard.edu https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
