Identifier: philtrans05069549 (find matches)
Title: The Excitatory Process in the Dog's Heart. Part II. The Ventricles
Year: 1915 (1910s)
Authors: Lewis, T. Rothschild, M.
Subjects: Proceedings of the Royal Society of London Philosophical Transactions of the Royal Society
Publisher: Royal Society of London

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al point by anestimated time of 0*0205 second. While the heart beat in responseto excitation at a point 15 mm. from the external contact, the excitationwave at the internal point preceded that at the external point by anestimated time of 0*0226 second. Ordinates (both curves), 5 millimetres =10 millivolts. Abscissae = 0*2 second.Fig. 31.—Dog G.O. An exactly similar experiment to that illustrated in fig. 30, with the exception that the point of stimulation lay only 6 mm. fromthe external point. The excitation wave at the internal point nowprecedes that at the external point by a lessened interval, namely,0*0170 second, because the external point receives the excitation wavedirectly and not through the Purkinje system. Ordinates (both curves), 5 millimetres =10 millivolts. Abscissae = 0*2 second. Note.—The ordinates for all standard curves (Lead 77) are on the scale of 3 centi-metres (30 scale divisions in reduced figures) = 3 millivolts. lull M till •: -11 Mi V * , 1 HI-\ I * IMP
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