Ursin R, Furset K, Aanderud L
Department of Physiology, University of Bergen, Norway.
Undersea Biomed Res. 1989 Jan;16(1):41-51.
The EEG of rats was studied with power spectrum analysis under compression to 71 ATA with He-O2 and during constant rate infusion of pentobarbital at 71 ATA and at surface. During compression the 1-4 Hz delta activity was increased, and 8-11 Hz alpha, 12-14 Hz spindle, and 16-10 Hz low beta activities were reduced compared to control animal recordings. During the course of pentobarbital infusion at 71 ATA, this picture changed: the delta activity was reduced while alpha and spindle activities (barbiturate spindles) increased, considerably more than in the rats studied at surface pressure. The findings may only in part be explained by pressure reversal of anesthesia.
在使用氦氧混合气压缩至71ATA时以及在71ATA和常压下恒速输注戊巴比妥期间，通过功率谱分析研究了大鼠的脑电图。在压缩过程中，与对照动物记录相比，1-4Hz的δ活动增加，而8-11Hz的α、12-14Hz的纺锤波和16-20Hz的低β活动减少。在71ATA输注戊巴比妥的过程中，这种情况发生了变化：δ活动减少，而α和纺锤波活动（巴比妥纺锤波）增加，比在常压下研究的大鼠增加得更多。这些发现可能仅部分由麻醉的压力逆转来解释。
