Motivational determinants in modification of behavior by morphine and pentobarbital.
D000818:Animals; D001519:Behavior; D006801:Humans; D009020:Morphine / Q000494:pharmacology*; D009042:Motivation; D010424:Pentobarbital / Q000494:pharmacology*
D009020:Morphine; D010424:Pentobarbital
BEHAVIOR; MORPHINE/effects; PENTOBARBITAL/effects