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  

|
January 04, 2019 03:37AM
Hi AFNI experts,
I got a question here, after i finished preprocessing step by using afni_proc.py, i found some of the data get an error message like:

** ERROR: *** Censoring has made regression impossible :( ***
** FATAL ERROR: 3dDeconvolve dies: Insufficient data (112) for estimating 142 parameters

and my afni_proc.py script as follows:

afni_proc.py -subj_id ${line} \
-script proc_${line} \
-dsets \
${input_dir}/${line}/rest+orig \
-copy_anat ${input_dir}/${line}/anat_ns_shft_al+orig \
-out_dir ${line}.results \
-blocks despike tshift tlrc volreg blur mask \
regress \
-tcat_remove_first_trs 2 \
-tlrc_base MNI152_T1_2009c+tlrc \
-volreg_align_to MIN_OUTLIER \
-volreg_tlrc_warp \
-volreg_warp_dxyz 3 \
-mask_segment_anat yes \
-mask_segment_erode yes \
-regress_censor_motion 0.4 \
-regress_censor_outliers 0.1 \
-regress_bandpass 0.01 0.1 \
-regress_apply_mot_types demean deriv \
-regress_ROI WMe \
-regress_est_blur_epits \
-regress_est_blur_errts \
-execute

I wondering that if it is influenced by the threshold of censor value? The dataset here is scanned from UWS(unresponsive wakefulness syndrome) patients, could you provide a suggestion about how to determine the threshold value here?
Subject Author Posted

censor threshold for specific patients

jack123 January 04, 2019 03:37AM