Hi FreeSurfers, I ran the longitudinal processing pipeline on my subjects, FS 5.0. Following the tutorial, first independently, then base, then long etc. Everything works well, no problems there.
Out of curiosity I compared the asegstats & aparcstats within subject at baseline (i.e. The same timepoint): so the independent fsid vs the same_fsid.long.same_fsid_template, and there are (large) differences between all volumes/thicknesses. The independent measures are in almost all brain areas larger compared to those derived from the longi-stream. Except for the IC, which is completely the same, but of course, this measure is based on the Buckner method and calculated differently. Overall this seems a bit strange to me, because I believe there shouldn't be differences within subject on the same time-point. Is this the result of the within-subject template use for the longitudinal data or is something else going wrong, or is this normal? Many thanks! Cheers, Cédric ------------------------------------------------------------ P.C.M.P. Koolschijn (Cédric), PhD Dutch Autism & ADHD Research Center Brain and Cognition Amsterdam, The Netherlands E p.c.m.p.koolsch...@uva.nl<mailto:p.c.m.p.koolsch...@uva.nl> W http://www.dutcharc.nl
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