Effects of narcotic opiates and serotonin on the electrical behavior of neurons in the guinea pig myenteric plexus.

Acetylcholine/metabolism Action Potentials/drug effects Animals Antitussive Agents/pharmacology Dextromethorphan/pharmacology Electric Stimulation Guinea Pigs Ileum/drug effects,innervation,physiology Levorphanol/pharmacology Lidocaine/pharmacology Male Morphinans/pharmacology Morphine/pharmacology Muscle, Smooth/drug effects,innervation Naloxone/pharmacology Neurons/drug effects,metabolism,physiology Serotonin/pharmacology Structure-Activity Relationship

Antitussive Agents Morphinans Levorphanol Serotonin Naloxone Dextromethorphan Morphine Lidocaine Acetylcholine