… The anti-nociceptive effect of heroin self-administered by vapor was identical in magnitude
to that produced by intravenous self-administration. Finally, anxiety-like behavior increased 24…

… A plausible explanation for this finding is that rats self-administered … process, generated
increasingly elevated brain reward thresholds during withdrawal. Although rats self-administered …

… Test in male and female rats that had self-administered oxycodone in the escalation phase
under LgA or ShA conditions or self-administered saline (Sal). Across treatment groups, …

… 62 Lynch, WJ, Roth, ME, Mickelberg, JL & Carroll, ME Role of estrogen in the acquisition
of intravenously self-administered cocaine in female rats. Pharmacol Biochem Behav 68, 641-…

… cocaine use including depression-like behavior and anhedonia. Rats subjected to intermittent
cocaine … in reducing demand elasticity for self-administered cocaine. Other work by this …

Background: α7 Nicotinic acetylcholine receptors are implicated in the reinstatement of drug-seeking,
an important component of relapse. We showed previously that the α7 nicotinic …

… induction of Zfp189 in the NAc self-administered more cocaine infusions than mice with G9a
… in an opponent process that is differentially balanced over the course of cocaine experience…

… sessions of descending unit doses of cocaine (1.0, 0.5, 0.25, 0.125, … properties of cocaine,
which will be described throughout as reinforcement.. Next, mice self-administered cocaine at …

… motivational and hedonic effects of sequential cocaine and heroin use by recording …
Cocaine consumption increased at a higher rate than heroin and total consumption of cocaine …

… Rats that self-administered cocaine progressively increased the number of infusions
received and the number of times the lever was pressed with respect to the saline group (whose …