Head Motion Biases Brain Structural Scans

A regular theme here at Neuroskeptic is the worrying issue of head movement during brain scans. We’ve seen that motion can alter measures of functional and structural connectivity, and that common approaches to dealing with this problem may be inadequate.

Now a new study reveals that even measures of the gross structure of the brain can be biased by excessive motion: Head motion during MRI acquisition reduces gray matter volume and thickness estimates.

Harvard neurologists Martin Reuter

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