GLOC
Gravity-induced loss of consciousness, or G-LOC, is a temporary incapacity that occurs when cerebral blood flow is insufficient during exposure to high sustained accelerations, most commonly in aviation and spaceflight. It is defined by a loss of consciousness that results from the brain not receiving enough oxygenated blood due to the effects of high gravity on venous return.
Mechanism and signs: As G-forces rise, blood pools in the lower body and pelvis, reducing blood flow
Typical factors and thresholds: G-LOC tends to occur at higher sustained or peak accelerations, with individual
Prevention and training: Prevention relies on equipment and technique. G-suits apply pressure to the legs and
Management and consequences: In the event of G-LOC, recovery typically occurs within seconds to minutes as normal