Briese E
Physiol Behav. 1983 Apr;30(4):529-37. doi: 10.1016/0031-9384(83)90216-0.
The effect of hypothalamic self-stimulation on colonic temperature and the effect of cold and warm environments on self-stimulation rate were assessed in 97 rats. In most of the rats, self-stimulation induced a rise in colonic temperature. However, in seven animals the reverse occurred. In the whole sample self-stimulation was significantly depressed by the warm environment. The cold environment facilitated self-stimulation at some placements and inhibited it at others. From the first six placements most facilitated by the cold environment five were also most inhibited by the warm environment. When allowed to self-stimulate in the cold environment high rate self-stimulators had a significantly lower colonic temperature than when they self-stimulated at 25 degrees C while low rate self-stimulators had the same or a higher colonic temperature. Body temperature changes induced by self-stimulation on the one hand, and the effects of the cold and warm environments on self-stimulation on the other appear to be independent one from another. The results suggest that among distinct types of hypothalamic rewarding loci a few might be specifically related to temperature regulation.
在97只大鼠中评估了下丘脑自我刺激对结肠温度的影响以及冷、暖环境对自我刺激率的影响。在大多数大鼠中，自我刺激引起结肠温度升高。然而，有7只动物出现了相反的情况。在整个样本中，温暖环境显著抑制了自我刺激。寒冷环境在某些部位促进了自我刺激，而在其他部位则抑制了自我刺激。在前六个受寒冷环境促进最明显的部位中，有五个也受到温暖环境的最大抑制。当在寒冷环境中进行自我刺激时，高频自我刺激者的结肠温度显著低于在25摄氏度下自我刺激时的温度，而低频自我刺激者的结肠温度则相同或更高。一方面，自我刺激引起的体温变化与另一方面冷、暖环境对自我刺激的影响似乎相互独立。结果表明，在下丘脑不同类型的奖赏位点中，有一些可能与体温调节特别相关。
