Lab, M J Mechanically dependent changes in action potentials recorded from the intact frog ventricle. [electronic resource] - Circulation research Apr 1978 - 519-28 p. digital Publication Type: Journal Article ISSN: 0009-7330 Standard No.: 10.1161/01.res.42.4.519 doi Subjects--Topical Terms: Action PotentialsAnimalsAnuraCardiac VolumeElectrocardiographyElectrodesInjections, IntraventricularVentricular FunctionXenopus--physiology