[FieldTrip] Getting "nan" from ft_read_cifti

[Joan Rue Queralt]

Dear all, 

I am new to this subject, so I apologize if this is a very simple error. 

I have downloaded parcellated fMRI time series from HCP and when I apply the function:

>> TC =  ft_read_cifti('100206.dtseries.nii’); 

Then the TC.dtseries has 200 columns (parcels) and 96854 rows, which I understand they are the values for each timestep. The problem is that quite a lot of these rows are purely “NaN” values. 

Does anybody experienced the same problem? What I am missing? 
Thank you in advanced!

Joan
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