1Neurobiology Dept., Armed Forces Radiobiology Research Institute
2Neuromuscularpathology Dept., Armed Forces Institute of Pathology
3Pathology Dept., Walter Reed Army Medical Center
Abstract
High speed cinefluorographic studies were performed on anesthetized primates during graded, experimental blunt impacts of the head or chest. Cineframe data were analyzed frame by frame to identify dynamic anatomic movement patterns during each injury. The results indicate that the brain and heart undergo significant displacements within the first few milliseconds (ms) post-impact and these transient interior motions were correlated with physiologic and pathologic changes as well as impact force and deceleration.