Let me try to clear up some confusion:
To answer the original question, the "area correction" that the minimal
preprocessing pipelines paper refers to for smoothing and resampling
surface data makes use of the individual's midthickness surface, not a
group average, for the reasons I previously men
Vertex areas are used in resampling from the native mesh to the 32k
registered mesh (this process occurs on the sphere and aside from the
vertex areas which are calculated on the subjects native mesh and 32k
registered mesh midthicknesses the midthicknesses are not involved).
The small amount of s
If you compute areas on subject's native mesh, then generally correction is not
necessary. But if you compute areas on a mean midthickness surface, for
example (e.g., computing supratheshold area on group-derived clusters/parcels),
then correction is appropriate.
The smoothing to which Tim ref
Great, thank you for the information! To clarify, does the smoothing and
area correction occur on the native mesh or Conte69? Do the cortical data
in a task file .dtseries.nii correspond to Conte69 midthickness, i.e., the
distances between and areas of the vertices are the same for all subjects?
T
No, we do not have a precomputed file of geodesic distances, we compute
them on the fly in any operation that needs them. Using the
-surface-geodesic-distance command on each vertex of interest is certainly
one way to find these distances, and may be the best available way
depending on the languag
Hello,
I am trying to define a neighborhood structure for vertices in the cortical
surface used in the fMRISurface pipeline. My understanding is that the
minimally preprocessed subject data are spatially matched to the 32k
Conte69 midthickness surface. I would like to use the same distance
structu
