The Role of Impact Location in Reversible Cerebral Concussion 831618
Mechanical impacts were delivered by an air propelled striker to the front, side, rear and top of rigid protective caps worn by six anesthetized monkeys. These tests were to produce reversible concussion and to determine differences in tolerance to concussion among the four impact sites. Striker force and cap accelerations were measures of the impact severity and animal blood pressure, respiration and ECG changes were measures of the physiological effects.
By distributing the blow with a protective cap, allowing free head movement after impact, skull fracture was eliminated and simple reversible concussion could be produced without symptoms of residual neurological deficit. Higher linear and angular accelerations produced longer periods of unconsciousness (more than 3 times) on the side than at any of the other locations. It is hypothesized that the decrease in concussion tolerance accompanied by higher accelerations for side impacts may be the result of lower mechanical impedance due to the oval shape of the animal head.
Citation: Hodgson, V., Thomas, L., and Khalil, T., "The Role of Impact Location in Reversible Cerebral Concussion," SAE Technical Paper 831618, 1983, https://doi.org/10.4271/831618. Download Citation
Author(s):
Voigt R. Hodgson, L. Murray Thomas, Tawfik B. Khalil
Affiliated:
Wayne State Univ. School of Medicine Dept. of Neurosurgery
Pages: 16
Event:
27th Stapp Car Crash Conference with IRCOBI and Child Injury and Restraint Conference with IRCOBI (1983)
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
Biomechanics of Impact Injury and Injury Tolerances of the Head-Neck Complex-PT-43
Related Topics:
Head
Physical examination
Side impact crashes
Kinematics
Pressure
Vehicle acceleration
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