3dLME -overwrite -prefix ../ncanda_scripts/ncanda_3dlme_output/3dlme_output_extxagexcor_continuous.nii.gz \
      -mask gm_50mask+tlrc \
      -model 'Ext_t*ageatvisit*correct+reward+meanmotion' \
      -qVars "Ext_t,ageatvisit,meanmotion" \
      -ranEff '~1' \
      -jobs 8 \
      -SS_type 3 \
      -dataTable @datatable_3dlme_resp2018419.txt

Subj   ageat… visit Ext_t Int_t Risk_… Ext_… Int_… meanm… corr… rewa… InputF…
  <fctr>  <dbl> <int> <dbl> <dbl> <fctr> <fct> <fct>  <dbl> <fct> <fct> <fctr>
1 A002    0.110     2  3.87  3.93 no     no    no    0.182  corr… neut… ../A00…
2 A002    0.110     2  3.87  3.93 no     no    no    0.182  corr… rewa… ../A00…
3 A002    0.110     2  3.87  3.93 no     no    no    0.182  erro… neut… ../A00…
4 A002    0.110     2  3.87  3.93 no     no    no    0.182  erro… rewa… ../A00…
5 A004    0.404     2  3.89  3.71 yes    no    no    0.0938 corr… neut… ../A00…
6 A004    0.404     2  3.89  3.71 yes    no    no    0.0938 corr… rewa… ../A00…

read.table("datatable_3dlme_resp2018419.txt",header=T) %>% group_by(reward,correct) %>% summarise(n=length(InputFile)) %>% filter(n!=1)
  reward  correct           n
  <fctr>  <fctr>        <int>
1 neutral correct         194
2 neutral error_correct   194
3 reward  correct         194
4 reward  error_correct   194

***** End of data structure information *****
++++++++++++++++++++++++++++++++++++++++++++++++++++

Reading input files now...

Reading input files: Done!

If the program hangs here for more than, for example, half an hour,
kill the process because the model specification or the GLT coding
is likely inappropriate.

~~~~~~~~~~~~~~~~~~~ Model test failed  ~~~~~~~~~~~~~~~~~~~
Possible reasons:

0) Make sure that R packages nlme and phia have been installed. See the 3dLME
help documentation for more details.

1) Inappropriate model specification with options -model, or -qVars.

2) In correct specifications in general linear test coding with -gltCode.

3) Mistakes in data table. Check the data structure shown above, and verify
whether there are any inconsistencies.

4) Inconsistent variable names which are case sensitive. For example, factor
named Group in model specification and then listed as group in the table hader
would cause grief for 3dLME.

** Error:
   Quitting due to model test failure...