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

History of AFNI updates  

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November 23, 2009 03:52PM
I think we'd want the chi-square statistic and associated p value at each voxel, yeah? In the context of a two-group, between-subjects test: Each subject contributes a whole-brain data set of ones and zeros which indicate whether voxels do (1) or do not (0) belong to a certain network. We'd like to know, at each voxel, whether the observed frequency (sum of one divided by n) departs significantly from the expected frequency (sum of ones divided by N).

Paul
Subject Author Posted

voxel-wise comparison of frequency-dependent data

Paul Hamilton November 19, 2009 08:55PM

Re: voxel-wise comparison of frequency-dependent data

bob cox November 20, 2009 09:26AM

Re: voxel-wise comparison of frequency-dependent data

Paul Hamilton November 20, 2009 09:22PM

Re: voxel-wise comparison of frequency-dependent data

bob cox November 21, 2009 04:02PM

Re: voxel-wise comparison of frequency-dependent data

Paul Hamilton November 23, 2009 03:52PM

Re: voxel-wise comparison of frequency-dependent data

bob cox November 24, 2009 09:18AM

Re: voxel-wise comparison of frequency-dependent data

Paul Hamilton November 24, 2009 04:41PM