Effects of Temperature on the Action Potential of Toad Ventricular Muscle Fiber and on Its Recovery Process

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概要

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• Intracellular action potentials from toad ventricular muscle fiber were recorded and measured using the flexibly mounted microelectrode. Temperature effect on the intracellular action potential could not be found in heart in situ and in those which were perfused with Straub's method. If the effect of temperature on the intracellular action potential is exactly zero in the range of optimal temperature, the electromotive force is equal to the internal energy of muscle fiber in Helmholtz-Gibbs' equation. Further, the S-T segment of the unipolar surface electrocardiogram deviated from the base line with the rise of temperature. The comparison of the unipolar surface electrocardiogram with the differentiation curve of the intracellular action potential suggests a possibility that the deviation of S-T segment depends upon the impedance change in the cell membrane with temperature.

• 1960-01-20

著者

• Suekane Keita

  Third Medical Clinic Kyoto University Hospital

• Suekane Keita

  Third Medical Clinic Of Kyoto University

• Maekawa Fuyuo

  Third Medical Clinic Of Kyoto University

• ONO BUNJIRO

  Third Medical Clinic of Kyoto University

関連論文

• Effects of Temperature on the Action Potential of Toad Ventricular Muscle Fiber and on Its Recovery Process
• Coupling of Electrical Phenomena and Mechanical External Work of Toad Heart under the Change of Temperature.

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