I am working with EEG but I have associated MRI in Analyze format. I have converted them to NIFTI format. However, the BIDS validator returns an error because it says the dimension is 4 instead of 3. Yet, even if the dimension is 4, it seems that the 4th dimension is not used. How can I remove the 4th dimension on the NIFTI file so it passes BIDS validation?
This is a link to the NIFTI and the original Analyze files.