You can't have a head without a neck ... more research is needed on how the neck moves and what impact those movements have on shearing within the brain during injury.
See more of Dr. Ghajar's videos here.
Produced by Noel Gunther and Justin Rhodes, BrainLine.
About the author: Jamshid Ghajar, MD, PhD
Jamshid Ghajar, MD, PhD is chief of Neurosurgery at Jamaica Hospital-Cornell Trauma Center, clinical professor of Neurosurgery at Weill Cornell Medical College and president of the Brain Trauma Foundation.