Dear All,
I am trying to perform a 2nd level analysis using contrast images but
I am getting the following error message:
.........
Plane 67/69 , block 1/1 : ...done
Plane 68/69 , block 1/1 : ...done
Plane 69/69 , block 1/1 : ...closing file
Spatial non-sphericity (over scans) : ...estimating derivatives
Spatial non-sphericity (over scans) : ...writing resels/voxel image
Warning: Divide by zero.
(Type "warning off MATLAB:divideByZero" to suppress this warning.)
> In /space/matlab6/toolbox/matlab/datafun/mean.m at line 26
In /space/spm/spm2/spm_est_smoothness.m at line 150
In /space/spm/spm2/spm_spm.m at line 880
Warning: Divide by zero.
(Type "warning off MATLAB:divideByZero" to suppress this warning.)
> In /space/matlab6/toolbox/matlab/datafun/mean.m at line 26
In /space/spm/spm2/spm_est_smoothness.m at line 151
In /space/s ...done
Saving results : ...done
Completed
The analysis I am trying to run is a two-sample t-test with the
following parameters:
scaling of overall grand mean
threshold masking: relative
explicit masking: no
global calculation: mean voxel value
Any idea what might be wrong?
Any help would be greatly appreciated.
Otto
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