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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October 06, 2022 12:41PM
Hi Robin,

Sorry for getting a bit distracted.

I was not expecting you to run 3dDeconvolve on a 4D dataset, ever, but to do something like:

- extract an ROI average time series of choice
(the realtime plugin can send this (or multiple)) to an IP address

- regress out the motion parameters (and polort) on the full time series
(run 3dDeconvolve on the 1D average)

- perform your comparison computation on the windowed time series


Having 429 time points might be managable.

Also, note that projecting out a few time series (motion, polort, sinusoids) from a 1D file might be faster to do directly in python (scipi.linalg). While a compiled C program is generally faster, you have to deal with writing to and reading from the file system, as well as repeatedly starting up the external program (3dDeconvolve). This overhead might make it more reasonable to do via scipy.linalg, since it is just a simple projection of unwanted terms from one time series.

- rick
Subject Author Posted

Motion correction on full run vs Small part of run Attachments

Robin September 29, 2022 08:55AM

Re: Motion correction on full run vs Small part of run

rick reynolds September 29, 2022 09:53AM

Re: Motion correction on full run vs Small part of run

Robin September 29, 2022 11:38AM

Re: Motion correction on full run vs Small part of run

rick reynolds September 29, 2022 12:07PM

Re: Motion correction on full run vs Small part of run

Robin September 30, 2022 06:45AM

Re: Motion correction on full run vs Small part of run

Robin October 06, 2022 08:45AM

Re: Motion correction on full run vs Small part of run

rick reynolds October 06, 2022 12:41PM

Re: Motion correction on full run vs Small part of run

Robin October 07, 2022 05:39AM

Re: Motion correction on full run vs Small part of run

rick reynolds October 07, 2022 11:11AM

Re: Motion correction on full run vs Small part of run

Robin October 07, 2022 07:44PM

Re: Motion correction on full run vs Small part of run

rick reynolds October 17, 2022 09:17AM