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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gang
August 12, 2019 01:27PM
> Would concatenating the two runs of data be correct if the baseline conditions in each run were different?

If specified properly, the two runs would have their own baselines (and slow drifting effects).

> I actually tried running a model wherein the tasks are concatenated- 3dDeconvolve in this case outputs
> colinearity warnings (becuase run 1 is highly correlated with the regressor for task 1 and run2 is highly
> correlated with the regressor for task2).

Are you saying that you didn't have collinearity when analyzing each run separately but you did when the two runs were concatenated? If so, something was not properly specified in the latter situation.

Gang
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Subject Author Posted

3dMema paired test

GMan August 11, 2019 07:20PM

Re: 3dMema paired test

gang August 12, 2019 10:37AM

Re: 3dMema paired test

GMan August 12, 2019 11:24AM

Re: 3dMema paired test

gang August 12, 2019 01:27PM

Re: 3dMema paired test

rick reynolds August 12, 2019 03:12PM

Re: 3dMema paired test

GMan August 12, 2019 03:48PM

Re: 3dMema paired test

GMan August 12, 2019 04:05PM

Re: 3dMema paired test

rick reynolds August 12, 2019 04:11PM

Re: 3dMema paired test

GMan August 12, 2019 05:08PM

Re: 3dMema paired test

rick reynolds August 12, 2019 05:31PM

Re: 3dMema paired test

Matthew Hoptman January 31, 2020 04:48PM

Re: 3dMema paired test

gang February 01, 2020 11:05AM