大白鼠(三月龄)在动物离心机上承受了+5Gz和+8Gz 3min的头-盆向超重作用后,用电镜技术观察到,鼠大脑皮层神经元有相当数量的线粒体发生了肿胀性的变化,出现了线粒体脊梁断裂和消失,基质电子密度减小等现象。+5Gz与+8Gz比较,+8Gz时表现更明显,但在暴露后24小时内二者都恢复正常。该结果表明,在高持续性+Gz作用时,大脑能量代谢发生了轻度的可逆性变化。 After three months of + 5Gz and + 8Gz 3min head-to-basin overgrowth in the animal centrifuge, rats (three months of age) observed a significant amount of mitochondrial swelling in the cerebral cortical neurons , Appeared mitochondrial spine rupture and disappearance of matrix electron density reduction and so on. + 5Gz compared to + 8Gz, more pronounced at + 8Gz, but both returned to normal within 24 hours of exposure. The results show that there is a mild reversible change in brain energy metabolism at high persistence + Gz action.