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February 18, 2019 11:06AM
Hey,

I have some task data (only one run) from a subject that I've analyzed using afni_proc. There were three stimulus classes provided. The output of the out.ss_review.redacted.txt has me somewhat perplexed. Below, it clearly states that there were 13 TRs censored per run, but then even farther below that it says that there were 11 2 10 (=23) TRs censored per stimulus.

At most, in the case of one run, I would expect sum(#TRs censored per stim) <= # TRS censored per run, since some TRs to be included in the baseline could also be censored and would not be reflected in #TRs censored per stim. There has to be something amiss somewhere. Any idea where?

subject ID                : MDD_1008
AFNI version              : AFNI_19.0.09
AFNI package              : linux_ubuntu_16_64
TRs removed (per run)     : 0
num stim classes provided : 3
final anatomy dset        : anat_final.MDD_1008+tlrc.HEAD
final stats dset          : stats.MDD_1008_REML+tlrc.HEAD
final voxel resolution    : 2.000000    2.000000        2.000000

motion limit              : 0.3
num TRs above mot limit   : 3
average motion (per TR)   : 0.0486667
average censored motion   : 0.0390909
max motion displacement   : 2.14551
max censored displacement : 1.86535
outlier limit             : 0.2
average outlier frac (TR) : 0.0249277
num TRs above out limit   : 10

num runs found            : 1
num TRs per run           : 254
num TRs per run (applied) : 241
num TRs per run (censored): 13
fraction censored per run : 0.0511811
TRs total (uncensored)    : 254
TRs total                 : 241
degrees of freedom used   : 20
degrees of freedom left   : 221

TRs censored              : 13
censor fraction           : 0.051181
num regs of interest      : 3
num TRs per stim (orig)   : 211 123 125
num TRs censored per stim : 11 2 10
fraction TRs censored     : 0.052 0.016 0.080
ave mot per sresp (orig)  : 0.044266 0.039016 0.048739
ave mot per sresp (cens)  : 0.034599 0.034229 0.032117

TSNR average              : 171.687
global correlation (GCOR) : 0.0397436
anat/EPI mask Dice coef   : 0.667881
maximum F-stat (masked)   : 9.38989
blur estimates (ACF)      : 0.849002 2.44407 10.7644
blur estimates (FWHM)     : 0 0 0
Subject Author Posted

# censored TTs disagrees with #TRs censored per stimulus class

Colm Connolly February 18, 2019 11:06AM

Re: # censored TTs disagrees with #TRs censored per stimulus class

rick reynolds February 19, 2019 09:50AM