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前言 我们调查了发生G-LOC时的加速度增长率对大脑新陈代谢改变的可能影响。有这样的假设,如果脑部局部缺血是G-LOC的主要机制的话,这些改变对所有的加速度增长率将是相似的。相反,如果G-LOC发生机制有与+Gz快速增长率相关的机械成份(大脑移位),那么高增长率时,脑的能量水平一定较高。方法 4个相同组(20只)雄性Sprague-Dawley大鼠(400g～500g),使用EEG电极做实验,监测G-LOC,
Preface We investigated the possible effect of the rate of increase in acceleration at the time of G-LOC on brain metabolic changes. It is hypothesized that if brain ischemia is the primary mechanism of G-LOC, these changes will be similar for all acceleration growth rates. Conversely, if the G-LOC mechanism has a mechanical component (brain shift) related to the rapid growth rate of + Gz, the brain’s energy level must be higher at high rates of growth. Methods Four identical (20) male Sprague-Dawley rats (400g ~ 500g) were used in this experiment. EEG electrodes were used to test G-LOC,