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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January 31, 2008 03:00PM
Pradeep,

Regarding FWHM estimates for group analysis, let me quote the following paragraph from website http://afni.nimh.nih.gov/sscc/gangc/mcc.html:

(3) Obtain spatial correlation (smoothness)

If you used 3dBlurToFWHM during preprocessing for all subjects, then simply adopt the numbers (under option -FWHM or -FWHMxy) from there. If you didn't, obtain the residual time series for each subject (through -errts in 3dDeconvolve), and then use 3dFHWMx on the residual time series in EPI resolution:

3dFWHMx -dset errts+orig -mask ... -out _fwhm.txt

Average the numbers (they should not vary much) across subjects. Using the input of 3dDeconvolve may work well too in the above command line.


Gang
Subject Author Posted

3dFWHM & cluster analysis

Don Hagler June 14, 2005 08:18PM

Re: 3dFWHM & cluster analysis

Gang Chen June 15, 2005 06:24PM

Re: 3dFWHM & cluster analysis

Chunming Lu June 16, 2005 03:49AM

Re: 3dFWHM & cluster analysis

Don Hagler June 16, 2005 02:51PM

Re: 3dFWHM & cluster analysis

Shruti Japee June 16, 2005 03:17PM

Re: 3dFWHM & cluster analysis

Don Hagler June 17, 2005 08:17PM

Re: 3dFWHM & cluster analysis

Gang Chen June 22, 2005 02:41PM

Re: 3dFWHM & cluster analysis

Lee Friedman June 30, 2005 03:27PM

Re: 3dFWHM & cluster analysis

Pradeep Kurup January 31, 2008 02:30PM

Re: 3dFWHM & cluster analysis

Gang Chen January 31, 2008 03:00PM

Re: 3dFWHM & cluster analysis

Pradeep Kurup January 31, 2008 05:40PM

Re: 3dFWHM & cluster analysis

Don Hagler June 17, 2005 09:12PM

Re: 3dFWHM & cluster analysis

Gang Chen June 22, 2005 02:33PM

Re: 3dFWHM & cluster analysis

Lee Friedman June 21, 2005 08:15PM

Re: 3dFWHM & cluster analysis

Gang Chen June 23, 2005 09:59AM

Re: 3dFWHM & cluster analysis

Lee Friedman June 23, 2005 10:44AM

Re: 3dFWHM & cluster analysis

Gang Chen June 23, 2005 01:08PM

Re: 3dFWHM & cluster analysis

Don Hagler June 25, 2005 07:03PM

Re: 3dFWHM & cluster analysis

Don Hagler June 25, 2005 07:04PM

Re: 3dFWHM & cluster analysis

Lee Friedman June 27, 2005 02:37PM