Hi Jon - The path.pd volumes are indeed the posterior probability distributions of each pathway. They are not normalized to a sum of 1 though b/c they're estimated by a sampling algorithm (drawing sample paths from this unknown distribution and adding up the sample paths, instead of estimating the distribution directly).
Hope this helps, a.y On Fri, 9 Nov 2012, Jon Clayden wrote: > Dear all, > I understand that the various "path.pd" image files that are created by > TRACULA represent a posterior > distribution over the corresponding tract location, but I was wondering if > someone could explain to me > exactly what the values in these images mean. I assume that they are not > probabilities as such, since they > have values ranging up to several hundreds. > > Thanks in advance, > Jon > > _______________________________________________ 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.
