Is this the same question posted yesterday on martinos-tech? I answered it as below
Yes, those are in the sig.nii.gz file (these are -log10(p)). The DOF is related to the number of TRs doug On 04/29/2014 04:49 PM, jaco...@nmr.mgh.harvard.edu wrote: > ---------- Forwarded message ---------- > Hello Doug et al., > > I was wondering if anyone could give me some information about whether a p > value can be associated with t maps generated in individual subjects > (across one or two runs) for fMRI data. When doing group contrasts an > uncorrected p value can be assigned based on the number of subjects (using > that to determine degrees of freedom). However, what are the degrees of > freedom for within subject analyses? Does it relate to number of TRs at > all? > > The question stems from wishing to state the uncorrected p value > associated with t thresholds from these maps that we used to extract BOLD > timecourses. > > Thank you! > Anne > > > ------------------------------- > Anne J. Blood, Ph.D. > Director, Mood and Motor Control Laboratory > Departments of Psychiatry and Neurology > Athinoula A. Martinos Center for Biomedical Imaging > Massachusetts General Hospital > CNY 149-2301, 13th St. > Charlestown, MA 02129 > phone: (617) 643-2297 > fax: (617) 726-7422 > email: abl...@nmr.mgh.harvard.edu > > > > > _______________________________________________ > 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: 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 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.
