Dear all,
after running a freesurfer preprocessing, in each subject subdirectory, the following files are produced:
lh.avg_curv lh.curv lh.curv.pial
(and the analogue for the right hemisphere)
what is the content of these files? sure, I can guess they represent the local curvature. but which one? the intrinsic? the extrinsic? what is the relation with the measures:
gauscurv, meancurv, foldind, curvind
obtained through the aparcstats2table?
It was quite surprising to me that on the wiki no precise definition is present, although one can guess that gauscurv is the intrinsic and meancurv the extrinsic curvature. what are foldind and curvind by the way? how can one get the intrinsic and extrinsic curvatures from the lh.curv files?
since these are all very useful measures, it would be of much help for me and other users (I believe) if some more intormation could be written on the wiki.
thanks for any help,
fabio
Dr. Fabio Bernardoni wiss. Mitarbeiter Psychosoziale Medizin und Entwicklungsneurowissenschaften Tel. +49 (0)351 458-5245 Fax +49 (0)351 458-7206 URL http://www.uniklinikum-dresden.de/psm; www.transdenlab.de Universitätsklinikum Carl Gustav Carus & Medizinische Fakultät an der Technischen Universität Dresden Anstalt des öffentlichen Rechts des Freistaates Sachsen Fetscherstraße 74, 01307 Dresden http://www.uniklinikum-dresden.de Vorstand: Prof. Dr. med. D. M. Albrecht (Sprecher), Wilfried E. B. Winzer Vorsitzender des Aufsichtsrates: Prof. Dr. med. Peter C. Scriba USt.-IDNr.: DE 140 135 217, St.-Nr.: 203 145 03113