In order to observe the effect of the positive acceleration stress on the con-tents of both plasma and thalamus endothelin (ET),the acute exposure of+6Gz and +10Gz was carried out in 36 Wistar rats,and the exposure of + IGz used as control group.

• 为了观察不同正加速度(+Gz)负荷(即头脚向惯性力与重力相比的倍数)对血浆及丘脑内皮素(ET)含量的影响；我们对36只Wistar大鼠分别进行了+6Gz和+10Gz的急性暴露实验；并以+1Gz暴露为对照.