Dear SPM Experts,
I am performing a ROI analysis by using marsbar and SPM5 (matlab version
7.0).
By means of Marsbar I define 5 ROIs as five different single voxels. Then
I import the random effects design defined in SPM5 into Marsbar. In order
to compute the mean contrast value within the ROIs across subjects, I
extract data from each ROI for each subject and run the SPM 5 random
effects design in Marsbar. Everything works fine for 4 of 5 ROIs. For the
fifth ROI (i.e, a single voxel having MNI coordinates -42 -6 56) I get the
following error:
Loaded MarsBaR defaults from base defaults
Design reporting:
Fetching data:
Warning: No valid data for roi 1 (points_coordinate_mm_-42_-6_56)
> In maroi.get_marsy at 80
In marsbar at 975
In spm at 857
...done
??? Function 'block_rows' is not defined for values of class 'cell'.
Error in ==> marsbar at 976
marsY = block_rows(marsY, row);
Error in ==> spm at 857
evalin('base',CBs{v-1})
??? Error while evaluating uicontrol Callback.
Which is the origin of this problem? And, How can I fix the problem?
Many thanks in advance.
Federico.
--
Federico Tubaldi, Ph.D Student
Dept. of General Psychology
University of Padova, Via Venezia 8, 35131, Padova, Italy
Present working position:
Visiting student at the Dept. of Neuroradiology
University of Tuebingen, Hoppe-Seyler Strasse 3, D-72076, Tuebingen, Germany
email: [log in to unmask]
mobile: 0049 0177 7466815
mobile: 0039 335 1400451
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