J Comp Physiol Psychol
September 1969
J Comp Physiol Psychol
December 1968
J Exp Anal Behav
November 1967
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.
View Article and Find Full Text PDFJ Comp Physiol Psychol
February 1967