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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June 22, 2022 08:29PM
Those 0's will change the correlation because the time series does not have mean==0.

If you pre-process the correlations (de-mean and scale so sum squares == 0), then correlations are dot products.
The errts time series has mean==0, and the zeros do not affect scaling or the dot products. So the censored time points should not affect the correlations.

Remove the means of the time series before inserting the zeros and try again.

- rick
Subject Author Posted

errts file with censored (scrubbed) volumes in functional connectivity

e0046902 June 21, 2022 10:59PM

Re: errts file with censored (scrubbed) volumes in functional connectivity

rick reynolds June 22, 2022 02:04PM

Re: errts file with censored (scrubbed) volumes in functional connectivity

e0046902 June 22, 2022 05:28PM

Re: errts file with censored (scrubbed) volumes in functional connectivity

rick reynolds June 22, 2022 08:29PM

Re: errts file with censored (scrubbed) volumes in functional connectivity

rick reynolds June 22, 2022 08:34PM

Re: errts file with censored (scrubbed) volumes in functional connectivity

e0046902 June 23, 2022 07:31AM

Re: errts file with censored (scrubbed) volumes in functional connectivity

rick reynolds June 23, 2022 09:38AM