title: Conditions required for the inhibitory feedback loop in noradrenergic transmission.
mesh_terms: D000818:Animals; D003042:Cocaine / Q000494:pharmacology; D004558:Electric Stimulation; D005246:Feedback; D006168:Guinea Pigs; D006325:Heart Atria / Q000294:innervation; D006339:Heart Rate / Q000187:drug effects; D066298:In Vitro Techniques; D009433:Neural Inhibition; D009638:Norepinephrine / Q000378:metabolism; D010646:Phentolamine / Q000494:pharmacology; D011941:Receptors, Adrenergic / Q000502:physiology*; D011942:Receptors, Adrenergic, alpha / Q000187:drug effects / Q000502:physiology*
chemical_list: D011941:Receptors, Adrenergic; D011942:Receptors, Adrenergic, alpha; D003042:Cocaine; D009638:Norepinephrine; D010646:Phentolamine