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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Akiko Ikkai
March 25, 2009 07:27PM
Sorry for the late reply... I was out of town.

yes, I got SD values using "-sresp" command in 3dDecon, and values are added in the 3rd column.

Coef Tstat SD
-0.1947 -0.1641 0.1186
-0.0314 -0.2652 0.1186
0.2725 2.2806 0.1195
0.3893 3.2582 0.1195
0.1590 1.3242 0.1201
-0.1989 -1.6512 0.1204
-0.2729 -2.2698 0.1202
-0.3023 -2.5223 0.1199
-0.2204 -1.8550 0.1188
-0.1105 -0.9183 0.1204

I have a feeling that SD/sqrt(number of trial) is not a valid calculation to get sem in deconvolution analysis. Other papers that do deconvolution appear to show "(between-subject SD at each time point)/sqrt(number of subjects)" as error bars. Is this the right approach to plot deconvolution time-series? If you could suggest any stats/MRI source that explain this, it'll be very helpful for us.

Thanks so much for your time! Akiko
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Subject Author Posted

SD with 3dDecon

Akiko Ikkai March 19, 2009 05:10PM

Re: SD with 3dDecon

Gang Chen March 20, 2009 10:22AM

Re: SD with 3dDecon

Akiko Ikkai March 20, 2009 02:02PM

Re: SD with 3dDecon

Gang Chen March 20, 2009 03:47AM

Re: SD with 3dDecon

Akiko Ikkai March 25, 2009 07:27PM

Re: SD with 3dDecon

Gang Chen March 26, 2009 10:53AM