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 27, 2006 03:16PM
Hi Gang,

In talking with a statistician here, we've been advised to transform the z scores (obtained using Fisher's r to z transformation) to a standard gaussian distribution by dividing by the sqrt(n-3). In this way, we would also be adjusting for the dof of the original data. Since we know that the original BOLD time-series has alot of temporal autocorrelation, our dof (n) should not the number of timepoints in the BOLD data, but an estimate of the effective dof of the BOLD time-series.

Thanks,
Judith
Subject Author Posted

temporal correlations, revisited

Katherine November 21, 2006 06:24PM

Re: temporal correlations, revisited

Zhark, Emperor November 22, 2006 11:32AM

Re: temporal correlations, revisited

Gang Chen November 22, 2006 11:48AM

Re: temporal correlations, revisited

Katherine November 22, 2006 12:01PM

Re: temporal correlations, revisited

Gang Chen November 22, 2006 12:20PM

Re: temporal correlations, revisited

Judith November 27, 2006 03:16PM

Re: temporal correlations, re-revisited

Paul Hamilton November 16, 2009 06:34PM

Re: temporal correlations, re-revisited

bob cox November 16, 2009 08:56PM

Re: temporal correlations, re-revisited

Paul Hamilton November 16, 2009 09:46PM