The identification of an octopaminergic neurone and the modulation of a myogenic rhythm in the locust.

摘要: An octopaminergic neurone in an insect is demonstrated. This cell (DUMETi) the dorsal unpaired median which projects to extensor tibiae muscle of locust metathoracic leg. Its soma was physiologically identified, isolated and shown contain about 0.1 pmol octopamine. Octopamine four times more concentrated axon than soma. The concentration at least 800 that identified motoneurone (which controls fast tibia). effects DUMETi on a myogenic rhythm leg can be mimicked by superfusion with low concentrations bundle possesses two types aminergic receptor: one slows (and has high-affinity for octopamine) second accelerates low-affinity octopamine but indolalkylamine, 5-hydroxytryptamine). roles receptor modulating are discussed relation function rhythm.