Traumatic distortions of the primate head and chest : correlation of biomechanical, radiological and pathological data.

High speed cinefluorographic studies were performed an anesthetized primates during graded, experimental blunt impacts of the head or chest. Results indicate that the brain and heart undergo significant displacements within the first few milliseconds post-impact and these transient interior motions were correlated with physiologic and pathologic changes as well as impact force and deceleration.