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 21, 2016 07:45PM
Hello,

I am carrying out an amplitude modulated analysis for one trial type and want to know what to do with the other trial type in my 3dDeconvolve call (see below).

Is it correct to simply use the -stim_times option to code for this stimulus-of-no-interest so that it will not be considered part of the baseline? In the file (below) this is the 'Facts' condition.

My second question is whether or not I have used the BLOCK function correctly so that it knows that my stimuli lasted for a duration of 16 seconds.

This is the first time I am doing an AM analysis. Please let me know if my 3dDeconvolve call looks strange for any reason.

Thank you,
Christine


3dDeconvolve \
-input fm_run1_al_3x3+orig \
fm_run2_al_3x3+orig \
fm_run3_al_3x3+orig \
-polort A \
-censor ${subject}_trialsofinterest.txt[0] \
-num_stimts 8 \
-stim_file 1 motion_3x3.txt[0] -stim_label 1 "Roll" -stim_base 1 \
-stim_file 2 motion_3x3.txt[1] -stim_label 2 "Pitch" -stim_base 2 \
-stim_file 3 motion_3x3.txt[2] -stim_label 3 "Yaw" -stim_base 3 \
-stim_file 4 motion_3x3.txt[3] -stim_label 4 "dS" -stim_base 4 \
-stim_file 5 motion_3x3.txt[4] -stim_label 5 "dL" -stim_base 5 \
-stim_file 6 motion_3x3.txt[5] -stim_label 6 "dP" -stim_base 6 \
-stim_times 7 ${subject}_Semantic_StimTimes.txt 'BLOCK(16,1)' -stim_label 7 "Facts" \
-stim_times_AM2 8 ${subject}_AM.txt 'BLOCK(16,1)' -stim_label 8 "Detail_Mod" \
-bout -tout \
-bucket decon_Autobio_AM1 \
-jobs 24
Subject Author Posted

AM analysis with a parameter that is not modulated

Christine Smith January 21, 2016 07:45PM

Re: AM analysis with a parameter that is not modulated

rick reynolds January 21, 2016 10:01PM