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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Chunming
September 19, 2007 08:07AM
Yes, that is just what I wanted.

By browsing the contents, I do not very understand the part of
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\"Deconvolution with Amplitude Modulation:
It is also legal to use a deconvolution model (e.g., \'TENT()\') with -stim_times_AM2. However, you must realize that the program will compute a separate HRF shape for the AM component of the response from the mean component. It is not possible to specify that the AM component has the same shape as the mean component, and just has a different response amplitude — that would be a nonlinear regression problem, and 3dDeconvolve isn\'t that flexible. Also, at present, the -iresp option will not output the HRF for the AM component of a -stim_times_AM2 deconvolution model. Nor have I actually tried using AM deconvolution myself on real data. If you are going to try to do this, you should (a) understand what you are doing, and (b) consult with someone here.\"
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This suggestion or warning is related to the -stim_times_AM2 method? Or you mean another method but do not detailed? Or you do not suggest use of this method at all?

Anyway, I will try it. Thank you very much!

-Chunming
Subject Author Posted

stimuli block design

Chunming Lu September 15, 2007 11:31AM

Re: stimuli block design

Gang Chen September 17, 2007 05:46PM

Re: stimuli block design

Chunming September 18, 2007 10:39AM

Re: stimuli block design

Gang Chen September 18, 2007 11:46AM

Re: stimuli block design

Chunming September 19, 2007 08:07AM