Letter | Published:

Effects of Intensity of Driving Stimulus on the Shape of Membrane Action Potential of the Heart

Naturevolume 192pages12951296 (1961) | Download Citation



AN investigation of the influence of driving stimuli on the membrane action potentials of toad cardiac muscle fibres has been made. Endocardial surfaces of excised hearts were exposed and the transmembrane potentials of atrial and ventricular fibres recorded by means of glass-pipette microelectrodes.

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  1. Department of Physiology, Faculty of Medicine, University of Tokyo, Tokyo

    • T. AZUMA
    • , H. HAYASHI
    • , T. KANNO
    •  & K. MATSUDA


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