---------- 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 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.
