Dear experts,

I have a few questions:

1) I am currently working on a project using tractography and the HCP
data. I have used the HCP provided FNIRT based MNI registration in order
to register individual streamlines from "native" or diffusion space (as
per post HCP minimal processing pipeline) to MNI space. However, in
Glasser 2016 supplementary text, it states that the MNI space is drifted
relative to the mean brain size of individual brains (greatest along the
x and z axes). I've been told that it is possible to "dedrift" these
data and I wonder if anyone has experience in doing this and is able to
point me in the right direction.

2) from what I understand, structural qualities such as cortical
thickness etc are measured in the individual's real space. However then,
what I do not understand is the file structure of the HCP data. The
structural measures such as cortical thickness, curvature and myelin
maps etc live in the MNINonLinear/fsaverage_LR32k rather than in the
'native space' directory. Can anyone shed light on this?

Regards,

Claude



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Forschungszentrum Juelich GmbH
52425 Juelich
Sitz der Gesellschaft: Juelich
Eingetragen im Handelsregister des Amtsgerichts Dueren Nr. HR B 3498
Vorsitzender des Aufsichtsrats: MinDir Dr. Karl Eugen Huthmacher
Geschaeftsfuehrung: Prof. Dr.-Ing. Wolfgang Marquardt (Vorsitzender),
Karsten Beneke (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
Prof. Dr. Sebastian M. Schmidt
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