The jet-effect theory and the neuromuscular-reaction theory are just about equal in absurdity and implausibility.
"The motion of the President's head as shown in the Zapruder film does not indicate the direction of the shot in my opinion, but the visible blow-out of tissue and bony fragments in frame 313 and subsequent frames do conclusively indicate the bullet came from behind. The head motion subsequently is interpreted as due to involuntary muscle extension and not due to the direction of the injury."--
Dr. Fred Hodges, Chief of Neuroradiology at Johns Hopkins Hospital, President of the Society of American Neuroradiology, and later Professor of Radiology at Mallinckrodt Institute of Radiology at Washington University in St. Louis, Mo.
Neuroradiology is the clinical sub-specialty concerned with the diagnostic radiology of diseases of the central nervous system, brain, head and neck, through the use of x-ray, MRI, CT and angiography.
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"Immediately after the shot through the head the President took rather abruptly an almost erect position before slumping over to the left. This straightening is to be considered a sudden opisthotonic reflex movement due to decerebration."
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Richard Lindenberg, M.D, Director of Neuropathology for the State of Maryland, Clinical Professor in Forensic Pathology and Lecturer in Neuroanatomy at University of Maryland
Neuropathology is the study of diseases of the brain, spinal cord, and nerves.
