Dear SPM users,

 

Sorry for reposting, but I did not get any replies the first time. Perhaps I might be more lucky this time J

 

Running a 2-sample t-test (comparing Groups A & B) on a number of first level contrasts, I get an error message for only two or three of the contrasts during estimation (no files are generated).

 

If I run the test using the GUI, then the error is just a warning saying:

 

Error running job: Error using ==> spm_spm at 861

Please check your data: There are no significant voxels.

In file "/storage/data/paloyelisy/SPM/spm5/spm_spm.m" (v946), function "spm_spm" at line 861.

In file "/storage/data/paloyelisy/SPM/spm5/spm_config_fmri_est.m" (v832), function "run_est" at line 394.

--------------------------

Done.

 

If I run the test using a script, the execution of the script stops and I  get a similar message:

 

??? Error using ==> spm_spm at 861

Please check your data: There are no significant voxels.

 

Error in ==> spm_config_fmri_est>run_est at 394

    SPM = spm_spm(SPM);

 

Error in ==> spm_jobman>run_struct1 at 1587

        feval(prog,val);

 

Error in ==> spm_jobman>run_struct1 at 1597

            run_struct1(c.val{i},gui);

 

Error in ==> spm_jobman>run_struct1 at 1597

            run_struct1(c.val{i},gui);

 

Error in ==> spm_jobman>run_job at 482

    run_struct1(c,gui);

 

Error in ==> spm_jobman at 89

            run_job(varargin{2});

 

Error in ==> T2ModelSpecificationEstimation at 166

       spm_jobman('run',jobs)

 

 

Would it be possible for someone to explain to me what this is about? Some recent postings on a similar topics suggested this could be an error of images not being lined-up, but in this case estimation was fine for most of the first-level contrasts, so  I am not sure how this could be the problem.

 

Does that simply mean that there were no significant voxels in either group and SPM does not need to compare the groups, or is it something else??

 

Many thanks for you help!

 

Best wishes,

Yannis