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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bunger
March 05, 2019 12:51PM
I would like to use the "SeedRad" option in InstaCorr in order to obtain correlations between a seed region to other brain regions. Does the "SeedRad" option in InstaCorr refer to the radius of the seed region in mm? Or does it refer to the number of voxels comprising the seed radius? I just want to be sure before I use this feature.

Additionally, is this seed radius reflected in all other brain regions? For example, if I choose SeedRad = 4, are the resulting correlation coefficients between the seed voxel + its 4mm radius to every other voxel + their 4mm radius? Or is the correlation simply between the seed voxel + its 4mm radius to all other voxels individually (i.e. without taking into consideration their neighboring voxels)?

Please let me know if you need me to clarify this question.

Thank you.
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Subject Author Posted

InstaCorr SeedRad option

bunger March 05, 2019 12:51PM

Re: InstaCorr SeedRad option

ptaylor March 05, 2019 01:02PM