The site of action of ibotenic acid and the identification of two populations of glutamate receptors on insect muscle-fibres.

Aminobutyrates/metabolism Animals Basidiomycota Binding, Competitive Dose-Response Relationship, Drug Glutamates/metabolism,pharmacology Grasshoppers In Vitro Techniques Iontophoresis Membrane Potentials/drug effects Membranes/metabolism Muscle Contraction/drug effects Muscles/metabolism Neural Conduction/drug effects Neurons/metabolism Oxazoles/pharmacology Perfusion Picrotoxin/pharmacology Quaternary Ammonium Compounds/pharmacology Receptors, Drug/drug effects Serotonin/pharmacology Time Factors Tryptamines/pharmacology

Aminobutyrates Glutamates Oxazoles Quaternary Ammonium Compounds Receptors, Drug Tryptamines Picrotoxin Serotonin