PowerPoint Presentation - Using AFNI Interactively

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Regression with Multiple Model Files

• Script file decon_ht2 does the job:

3dDeconvolve -xout -input rall_vr+orig \

-num_stimts 4 \

-stim_file 1 stim_files/scan1to4a_hrf.1D -stim_label 1 Actions \

-stim_file 2 stim_files/scan1to4t_hrf.1D -stim_label 2 Tool \

-stim_file 3 stim_files/scan1to4h_hrf.1D -stim_label 3 HighC \

-stim_file 4 stim_files/scan1to4l_hrf.1D -stim_label 4 LowC \

-concat contrasts/runs.1D \

-glt 1 contrasts/contr_AvsT.txt -glt_label 1 AvsT \

-glt 1 contrasts/contr_HvsL.txt -glt_label 2 HvsL \

-glt 1 contrasts/contr_ATvsHL.txt -glt_label 3 ATvsHL \

-full_first -fout -tout \

-bucket func_ht2

• Run this script by typing source decon_ht2 (takes a few minutes)

•Stim #1 = visual presentation of active movements

•Stim #2 = visual presentation of simple (tool-like) movements

•Stims #3 and #4 = high and low contrast gratings