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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October 18, 2017 05:30PM
Hi Rick,

I like your idea of pretending that the active baseline condition is just another type of stimulus condition.

How would the program know that this extra task is also part of the same condition as the "-post_stim_rest" TRs? Or is there a way to force each run to end with 9 seconds of my baseline 'condition' and set "-post_stim_rest" equal to zero?

Finally, for tests of my plannted GLTs, I am interested in 1) all the conditions together vs baseline and 2) the area under the curve for each of the 8 conditions of interest. Can you help me understand how to specify those to identify their fitness? I am interested in reducing the amount of run time devoted to the baseline condition and want to see if these GLTs will suffer when I start eliminating baseline trials.

Below are my variables and command line.

Best,
Christine

Here are my variables:
set num_stim = 9
set num_runs = 5
set pre_rest = 12 # min rest before first stim (for magnet steady state)
set post_rest = 9 # min rest after last stim (for trailing BOLD response)
set min_rest = 0 # minimum rest after each stimulus
set tr = 0.75 # used in 3dDeconvolve, if not make_random_timing.py
set stim_durs = 15.5 15.5 15.5 15.5 15.5 15.5 15.5 15.5 3
set stim_reps = 4 4 4 4 4 4 4 4 50
set run_lengths = 890
set labels = "label1 label2 label3 label4 label5 label6 label7 label8 baseline"

Here is my [your :)] command line:
make_random_timing.py -num_stim $num_stim -stim_dur $stim_durs \
-num_runs $num_runs -run_time $run_lengths \
-num_reps $stim_reps -prefix stimes.$iter \
-pre_stim_rest $pre_rest -post_stim_rest $post_rest \
-min_rest $min_rest \
-stim_labels $labels \
-seed $seed \
-tr $tr \
-show_timing_stats \
-save_3dd_cmd cmd.3dd.$iter \
>& out.mrt.$iter
Subject Author Posted

'active' baseline task and make_random_timing.py

Christine Smith October 16, 2017 07:21PM

Re: 'active' baseline task and make_random_timing.py

rick reynolds October 18, 2017 09:28AM

Re: 'active' baseline task and make_random_timing.py

Christine Smith October 18, 2017 05:30PM

Re: 'active' baseline task and make_random_timing.py

Christine Smith October 25, 2017 05:03PM

Re: 'active' baseline task and make_random_timing.py

rick reynolds October 25, 2017 06:29PM

Re: 'active' baseline task and make_random_timing.py

Christine Smith October 26, 2017 03:15PM

Re: 'active' baseline task and make_random_timing.py

rick reynolds November 03, 2017 11:41AM

Re: 'active' baseline task and make_random_timing.py

Christine Smith November 06, 2017 09:27PM

Re: 'active' baseline task and make_random_timing.py

rick reynolds November 09, 2017 10:43AM

Re: 'active' baseline task and make_random_timing.py

Christine Smith November 20, 2017 08:24PM

Re: 'active' baseline task and make_random_timing.py

rick reynolds November 21, 2017 11:25AM

Re: 'active' baseline task and make_random_timing.py

rick reynolds November 22, 2017 08:29AM

Re: 'active' baseline task and make_random_timing.py

Christine Smith November 29, 2017 03:19PM

Re: 'active' baseline task and make_random_timing.py

rick reynolds November 29, 2017 03:46PM