RT Journal Article SR Electronic T1 EFFECTS OF THIOPENTAL AND A TETRAHYDROCANNABINOL DERIVATIVE ON AROUSAL AND RECRUITING IN THE CAT JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 138 OP 145 VO 149 IS 1 A1 Boyd, E. S. A1 Meritt, D. A. YR 1965 UL http://jpet.aspetjournals.org/content/149/1/138.abstract AB Thiopental, 2 mg/kg, and DMHP, 0.2 mg/kg, increased the threshold for EEG arousal in acute preparations, and for behavioral, as well as EEG, arousal in chronic preparations. Arousal was induced in all preparations by electrical stimulation of the reticular formation. It is suggested that some responses following thiopental, such as cortical desynchronization from the drug and synchrony instead of asynchrony during stimulation, as well as occasional initial lowering of threshold for arousal by both thiopental and DMHP, may be explained on the basis of an ascending inhibitory reticular system. An attempt to produce EEG and behavioral arousal by the selective circulation of thiopental to the pontomedullary region in chronically prepared animals was successful in only 2 of 8 preparations. Thiopental, 5 to 10 mg/kg, and DMHP, 0.2 mg/kg, had no effect on the recruiting response. The Williams & Wilkins Comapny