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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February 16, 2016 10:59AM
Hello everybody,
I am trying to run 3dDeconvolve in an experiment with volumes being acquired at irregular times. I'm designing the experiment right now and I want to use 3dDeconvolve -nodata to search for a statistically efficient design. However, based on the documentation I only see how to specify regularly spaced scan times (e.g. with the option [-nodata [NT [TR]]).
In the design that I want to run, I have for every trial ~3s of silent time (no scanning because I present sounds to participants) and then I acquire say 2 volumes in 2s each. That means that the scans occur at irregular times, e.g. at times t=[3,5,10,12,17,18,...].
Can anybody help me with how I should enter this design into 3dDeconvolve? Much appreciated.
Floris
Subject Author Posted

3dDeconvolve with irregular volume acquisition times (sparse sampling)

florisvanvugt February 16, 2016 10:59AM

Re: 3dDeconvolve with irregular volume acquisition times (sparse sampling)

Peter Molfese February 16, 2016 12:31PM

Re: 3dDeconvolve with irregular volume acquisition times (sparse sampling)

florisvanvugt February 17, 2016 09:55AM

Re: 3dDeconvolve with irregular volume acquisition times (sparse sampling)

jkeidel February 17, 2016 10:42AM

Re: 3dDeconvolve with irregular volume acquisition times (sparse sampling)

rick reynolds February 17, 2016 11:16AM