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 30, 2014 10:15AM
> I am interested to find that the correlation between the seed region and the seed
> region (when the seed region was also included in the ROI mask) is 0. I would
> have expected it to be 1. Does it make sense for it to be zero?

There are two new regressors that are added to the PPI analysis: one is the seed region time series, and the other is the interaction regressor. At the seed region, you may find that the correlation with the first regressor is close, if not equal, to 1, but it's not necessarily true with the second one. I'm not so sure which one you're referring to. Regardless, the result at the seed region is not really interesting or interpretable.

Gang



Edited 1 time(s). Last edit at 06/30/2014 10:44AM by Gang.
Subject Author Posted

Interpreting Activation Map from Context Dependent Corr Analysis

adjacobson1 June 23, 2014 11:53AM

Re: Interpreting Activation Map from Context Dependent Corr Analysis

rick reynolds June 23, 2014 04:08PM

Re: Interpreting Activation Map from Context Dependent Corr Analysis

adjacobson1 June 27, 2014 02:42PM

Re: Interpreting Activation Map from Context Dependent Corr Analysis

gang June 27, 2014 04:40PM

Re: Interpreting Activation Map from Context Dependent Corr Analysis

adjacobson1 June 27, 2014 05:46PM

Re: Interpreting Activation Map from Context Dependent Corr Analysis

gang June 30, 2014 10:15AM

Re: Interpreting Activation Map from Context Dependent Corr Analysis

adjacobson1 July 02, 2014 05:24PM

Re: Interpreting Activation Map from Context Dependent Corr Analysis

gang July 02, 2014 05:33PM

Re: Interpreting Activation Map from Context Dependent Corr Analysis

adjacobson1 July 02, 2014 05:50PM

Re: Interpreting Activation Map from Context Dependent Corr Analysis

gang July 03, 2014 10:24AM

Re: Interpreting Activation Map from Context Dependent Corr Analysis

rick reynolds June 30, 2014 10:37AM

Re: Interpreting Activation Map from Context Dependent Corr Analysis

adjacobson1 June 30, 2014 02:59PM