Statistical Analysis of -X Rhesus Head Kinematics

摘要

The use of the rhesus as a human surrogate in studying head-neck injury due toimpact acceleration depends of the similarity of human and rhesus head-neck kinematic and dynamic responses. This report addresses the question of -X rhesus head-neck kinematics. The dependence of the first major peaks of head linear and angular accelerations, velocities and displacements on sled acceleration parameters and initial head position is statistically analyzed. The effects of anesthetic state, repeated exposures and out-of-plane response on these key kinematics outputs are assessed. Various graphical and statistical comparisons indicate that: (1) human and rhesus -X head kinematics are not only similar in shape but, more importantly, depend on the same sled and head initial position parameters; (2) anesthetic state has no significant statistical effect on rhesus kinematic output; and (3) the effects of repeated tests and out-of-plane response can be reasonably explained. These results justify a fullscale attempt to fit key human and rhesus kinematics and dynamic responses and develop appropriate scaling procedures. Recommendations concerning the structuring of future human and rhesus experiments to facilitate the necessary statistical comparisons are also given.