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 Chen
December 02, 2003 11:51AM
Since the trend might be different for each of your trials, it seems to me that averaging all the five datasets before regression analysis would not be a good strategy.

Furthermore, I fail to see why you would like to average the five trials. Instead it probably makes more sense to concatenate all the five datasets, create a new ideal.1D file five times longer as the original one, and then run 3dDeconvolve with the option '-concat' by specifying the starting points for all the five trials. In doing so, each trial is detrended separately, and more importantly the signal (including random noise) is modelled with all the datasets as a whole.

Gang
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Subject Author Posted

ideal.1D

Kevin December 02, 2003 11:26AM

Re: ideal.1D

Gang Chen December 02, 2003 11:51AM

Re: ideal.1D

Kevin December 02, 2003 03:58PM

Re: ideal.1D

bob cox December 02, 2003 05:18PM

Re: ideal.1D

Kevin December 03, 2003 08:32AM

Re: ideal.1D

Matthew Belmonte December 03, 2003 07:28AM