Panksepp J, Trowill J A, Trehub A
J Exp Anal Behav. 1967 Nov;10(6):571-9. doi: 10.1901/jeab.1967.10-571.
A swivel was developed for concurrent intraorganismic fluid injection and intracranial electrical stimulation of the unrestrained rat. Effects of various intragastric injections on bar-pressing maintained by electrical stimulation of the hypothalamus were studied. In some subjects, intragastric injections of either water or milk decreased the rate of responding. This decrease resulted from pauses in responding rather than from decreases in the local rates of responding. The decrement in responding occurred at a lower gastric volume during milk injection than during water injection. In other subjects, however, neither water, milk, nor 32% sucrose injections affected the rate of self-stimulation.
开发了一种旋转装置,用于在无束缚大鼠体内同时进行液体注射和颅内电刺激。研究了各种胃内注射对下丘脑电刺激维持的压杆行为的影响。在一些实验对象中,胃内注射水或牛奶会降低反应速率。这种降低是由于反应暂停,而不是局部反应速率的降低。与注射水相比,注射牛奶时,在较低的胃容量下就会出现反应减少的情况。然而,在其他实验对象中,注射水、牛奶或32%的蔗糖均不影响自我刺激的速率。