[Freesurfer] TRACULA: 20% default threshold

2016-07-26 Thread Newbold, Dillan
Hi everyone, I’m having a little trouble understanding the exact meaning of the 20% default threshold used in the freeview -tv option and dmri_pathstats --pthr. I’ve seen multiple threads where Anastasia said that it is 20% of the maximum value in the probability distribution—which corresponds

[Freesurfer] TRACULA: narrow probability distributions

2016-08-23 Thread Newbold, Dillan
Dear Anastasia, I’ve been looking at a lot of Tracula path.pd files and I’ve found that some probability distributions are only a single voxel wide, similar to the path.map file. The few none-zero voxels in these path.pd files have very high probability values. When an isosurface is generated f

[Freesurfer] TRACULA: narrow probability distribution

2016-08-23 Thread Newbold, Dillan
Dear Anastasia, I’ve been looking at a lot of Tracula path.pd files and I’ve found that some probability distributions are only a single voxel wide, similar to the path.map file. The few none-zero voxels in these path.pd files have very high probability values. When an isosurface is generated f