Mechanism for Control of Head and Neck Dynamic Response

A modeling effort has been undertaken at the Naval Biodynamics Laboratory in New Orleans to determine the cause of atypical responses of the head/neck anatomy of certain volunteer subjects to -X vector direction acceleration profiles. The results appear to indicate that these subjects, who had been...

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Bibliographic Details
Published in:SAE transactions 1984-01, Vol.93, p.974-989
Main Authors: Seemann, Marjorie R., Lustick, Leonard S., Frisch, Georg D.
Format: Article
Language:English
Subjects:
Anatomy
Angular acceleration
Coordinate systems
Dynamic response
Head
Impact acceleration
Kinematics
Neck
Sleds
Torque
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Summary:A modeling effort has been undertaken at the Naval Biodynamics Laboratory in New Orleans to determine the cause of atypical responses of the head/neck anatomy of certain volunteer subjects to -X vector direction acceleration profiles. The results appear to indicate that these subjects, who had been previously run in the +Y and/or -X+Y vector directions, may have learned to exert purposeful control over their head/neck responses in order to lessen the severity of their exposures. Computer simulations appear to verify the theorized explanation that the subjects "locked" their head/neck joints in anticipation of sled firing, and that the joints remained locked during the initial portion of the run until forces and torques increased to a level which forced their joints to unlock.
ISSN:0096-736X