Experimental Studies On Pathophysiologic Effects Of Repeated +Gz Exposures On Brain And Its Mechanism

Modern high performance aircraft are capable of producing acceleration in the +9 Gz range sustained for 15 -45s which may exceed the man' s physiologic tolerance. +Gz- induced loss of consciousness (G-LOC) is not only the major factor limiting man's performance, but also the main threat for flying safety. G- LOC is classically attributed to a decrease in cortical blood flow that results from a drastic decrease in cerebral perfusion pressure. Approximately 12% to 30% of U.S. Air Force and U. S. Navy pilots flying high performance aircraft experience G-LOC. These occurrences of G-LOC have resulted in 18 class A mishap. Therefore, the focus of the...