�ber den funktionellen Aufbau des Herzens aus elektrophysiologischen Elementen und �ber den Mechanismus der Erregungsleitung im Herzen

Electrical Impedance of Cardiac Muscle

“…Several lines of evidence have led to a questioning of the validity of the electrical theory of transmission. 4 " 8 The present report deals with an effort to determine the resistance and the capacitance of the transverse membranes by measurement of tissue impedance in the direction of fiber orientation, before and after reduction of the interspace ion concentration. This work is an extension, with impedance measurements, of a previous report 7 which presented D.C. resistance measurements.…”

The electrical constants of Purkinje fibres

“…The relatively low value of the specific d.c. resistance of myoplasm (twice that of Tyrode solution) suggests (i) that the smaller units making up the Purkinje fibre, the Purkinje cells, are not surrounded by ionic barriers of any importance, (ii) that Purkinje fibres are not subdivided by transverse membranes (cf. Rothschuh, 1951) and (iii) that most of the intracellular ions must be free to move under the influence of an electric field.…”

Intercellular communication in cardiac muscle.

“…Pre-established transversal barriers between heart cells were proposed by Rothschuh (1951) to explain the healing-over, but this idea was rejected because the core resistance of cardiac fibers is low (Weidmann, 1952). The healing-over seems, then, to depend on a sealing process localized near the injured area which halts the spread of depolarizing current from damaged to non-damaged cells (see Weidmann, 1967;De Mello, 1972).…”