I am running a second level analysis, but SPM is returning an error during the sphericity correction.
Specifically, "Check Data: No Significant Voxels". All subsequent steps in the analysis fail after this.
I suspected that I had not turned off implicit masking so I re-ran the analysis setting implicit masking to 0.
I used the following code for this:
level2Batch{1}.spm.stats.factorial_design.masking.im = 0;
I confirmed that masking.im = 0 in the actual batch file. But I still got the same error.
I looked into the SPM.mat file generated by the second level analysis and saw that SPM.xM.I = 1, and SPM.xM.xs.Implicit_masking = 'Yes:NaN's treated as missing'
Based on this, it seems like implicit masking is still engaged, but I am not sure how to turn it off.
1) Am I correct that implicit masking is still turned on?
2) How can I disable it?
Thank you.
Sincerely,
Brandon Ashinoff
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