Blair, R Naloxone's antagonism of rigidity but not explosive motor behavior: possible evidence for two types of mechanisms underlying the actions of opiates and opioids. [electronic resource] - Behavioral biology Sep 1978 - 24-31 p. digital Publication Type: Journal Article ISSN: 0091-6773 Standard No.: 10.1016/s0091-6773(78)92851-1 doi Subjects--Topical Terms: Acoustic StimulationAnalgesiaAnimalsBehavior, Animal--drug effectsBenzimidazoles--administration & dosageHabituation, PsychophysiologicInjections, IntraperitonealInjections, IntraventricularMaleMorphine--administration & dosageMotor Activity--drug effectsNaloxone--administration & dosagePostureRatsReceptors, Opioid--drug effects