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  

|
September 02, 2015 03:09PM
The closest analogy to FSL that I would recommend in AFNI would be to eschew the polynomial regressors in AFNI and instead put in trigonometric regressors to pick up the low frequencies you want filtered out, and let the linear regression + pre-whitening model do it all at once." So by eschewing polynomial regressors you mean to change the polort option to 0, correct? But I do not understand how to put in trigonometric regressors to pick up the low frequencies. Is that what 3dTProject accomplishes?

3dTproject removes the unwanted components from the data, and that's it. It is intended for use with resting state data, where there is no a priori "signal" component.

For task state data, you can generate the trigonometrical time series that correspond to a range of frequencies using the 1dBport program. Then these are input to 3dDeconvolve (and hence 3dREMLfit) via the -ortvec option. The examples in the output of 1dBport -help should provide some guidance -- http://afni.nimh.nih.gov/pub/dist/doc/program_help/1dBport.html
Subject Author Posted

FSL versus AFNI GLM (i.e. 3dREMLfit versus FEAT)

jdkent August 27, 2015 01:57PM

Re: FSL versus AFNI GLM (i.e. 3dREMLfit versus FEAT)

Emperor Zhark August 31, 2015 10:43AM

Re: FSL versus AFNI GLM (i.e. 3dREMLfit versus FEAT)

jdkent September 01, 2015 02:24PM

Re: FSL versus AFNI GLM (i.e. 3dREMLfit versus FEAT)

Emperor Zhark September 02, 2015 03:09PM

Re: FSL versus AFNI GLM (i.e. 3dREMLfit versus FEAT)

jdkent September 04, 2015 03:22PM

Re: FSL versus AFNI GLM (i.e. 3dREMLfit versus FEAT)

rick reynolds September 04, 2015 03:48PM

Re: FSL versus AFNI GLM (i.e. 3dREMLfit versus FEAT)

jdkent September 04, 2015 06:14PM

Re: FSL versus AFNI GLM (i.e. 3dREMLfit versus FEAT)

rick reynolds September 08, 2015 01:09PM