Hi Fatima, Your findings are not surprising. There is plenty of literature describing problems with the VBM technique. You may read e.g., Kennedy et al (2009), Neurobiology of Aging, vol. 10, 1657-1676 and references cited herein.
Ed On 8 Jul 2011, at 15:02, [email protected] wrote: > > Hello, > > I'm wondering if anyone could help me out with a question I had. For > a study I'm working on, I'm comparing the regional brain volumes in > adolescents with and without PTSD. I ran VBM analysis and Freesurfer > on my subjects and I found some significant results on VBM (however, > only using uncorrected p values) and on Freesurfer, I found no group > differences in brain regions. Is there an explanation for that? > > If anyone has any thoughts I'd really appreciate it. Thank you kindly! > > Fatima _______________________________________________ Freesurfer mailing list [email protected] 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.
