Re: [Freesurfer] Cortical Thickness at Individual Vertices (fwd)

2018-07-18 Thread James Gullickson
o: Bruce Fischl > Cc: freesurfer@nmr.mgh.harvard.edu > Subject: Re: [Freesurfer] Cortical Thickness at Individual Vertices > > > External Email - Use Caution > > Hi Bruce! > James: I don't have any particular deep thoughts except, all things equal, > i

Re: [Freesurfer] Cortical Thickness at Individual Vertices (fwd)

2018-07-12 Thread Bruce Fischl
from Tom -- Forwarded message -- Date: Thu, 12 Jul 2018 16:51:31 +0100 From: Thomas Nichols To: Bruce Fischl Cc: freesurfer@nmr.mgh.harvard.edu Subject: Re: [Freesurfer] Cortical Thickness at Individual Vertices External Email - Use Caution Hi Bruce

Re: [Freesurfer] Cortical Thickness at Individual Vertices

2018-07-12 Thread Bruce Fischl
Hi James you could use techniques that compare the whole distribution of thicknesses across subject populations. You could do a t-test or something non-parametric like a Kolmogorov-Smirnov or use permutation testing. I'll cc Tom Nichols so he can chime in with something more sophisticated or

[Freesurfer] Cortical Thickness at Individual Vertices

2018-07-11 Thread James Gullickson
External Email - Use Caution All, I am comparing cortical thickness between subjects with and without mild traumatic brain injury (mTBI). So far the contrasts in QDEC have not been significant after correcting for multiple comparisons. I am not necessarily surprised at this due to