title: Frequency response analysis of inotropic nerve action upon the isolated sympathetically innervated guinea-pig atrium.
mesh_terms: D000200:Action Potentials; D000818:Animals; D016275:Atrial Function; D004558:Electric Stimulation; D006168:Guinea Pigs; D006325:Heart Atria / Q000294:innervation*; D010275:Parasympathetic Nervous System / Q000502:physiology; D013564:Sympathetic Nervous System / Q000502:physiology*; D009435:Synaptic Transmission; D013997:Time Factors