AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

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Doughboys
March 27, 2020 05:34PM
Hello AFNI expert,

I would like to compare the ability of different atlases to extract a homogeneous BOLD signal in each ROI.
I created different atlases based on ICA. I built one atlas per component number (for ex: from 5 to 30 components so I have 25 atlases).
I was thinking of using 3dReHo with -in_rois one each atlas and calculating the curve of an increase of ReHo per atlas.
Since I increase the number of regions and so the number of subdivisions in each atlas I may expect a relatively linear increase of the mean ReHo for each atlas?
The idea is to identify one or two atlases that display a significantly high ReHo for their component number.
Does this make sense? Does this will really identify an atlas that could be "ideal" for a correlation matrix analysis?
If not, is their another way to do that?
I hope that I am not saying non-sense.
thank you for help!
Clément
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Subject Author Posted

3dReHo for brain atlas comparaison

Doughboys March 27, 2020 05:34PM

Re: 3dReHo for brain atlas comparaison

ptaylor March 29, 2020 06:06PM

Re: 3dReHo for brain atlas comparaison

Doughboys April 02, 2020 05:37PM

Re: 3dReHo for brain atlas comparaison

ptaylor April 04, 2020 12:12PM