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High-fidelity recording of cardiac depolarization

High-fidelity recording of cardiac depolarization recording of cardiac depolarization GARY J. ERSON, KALMAN GREENSPAN, Department of Medicine, Indiana University School Marion County General Hospital, Indianapolis, Indiana of JACK Medicine, 46202 P. BURA, Krannert Institute of CHARLES Cardiology, FISCH ERSON, GARY J-, KALMAN GREENSPAN, JACK P. BURA, CHARLES FISCH. High-jdelity recording of cardiac depolari . When the resting potential fell to about -60 mv, the high-K+ solution was replaced with norma Tyrode until the control resting potential was reestablished. A diagrammatic representation of the instrumentation is illustrated in Fig. 1. The amplifier output was simultaneously recorded on channels I 4 of the PI 6204. When both Purkinje ventricular TAPS were recorded, channels 1 4 recorded the former. The ventricular TAPS were recorded on channel 2; channel 3 carries the voice signal. Channel 4 serves as the synchronization channel is played back on a separate reproduce head displaced 1.31 inches in front of the reproduce head for channels 1, 2, 3. The output of channel 4 acts as the synchronization pulse for the oscilloscope sweep generator, appearing I75 msec before its counterpart appears on channel I (tape transport speed of 7.5 inches/set). The purpose of the channel 4 is to provide accurate coupling of the http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Applied Physiology The American Physiological Society

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Publisher
The American Physiological Society
Copyright
Copyright © 1970 the American Physiological Society
ISSN
8750-7587
eISSN
1522-1601
Publisher site
See Article on Publisher Site

Abstract

recording of cardiac depolarization GARY J. ERSON, KALMAN GREENSPAN, Department of Medicine, Indiana University School Marion County General Hospital, Indianapolis, Indiana of JACK Medicine, 46202 P. BURA, Krannert Institute of CHARLES Cardiology, FISCH ERSON, GARY J-, KALMAN GREENSPAN, JACK P. BURA, CHARLES FISCH. High-jdelity recording of cardiac depolari . When the resting potential fell to about -60 mv, the high-K+ solution was replaced with norma Tyrode until the control resting potential was reestablished. A diagrammatic representation of the instrumentation is illustrated in Fig. 1. The amplifier output was simultaneously recorded on channels I 4 of the PI 6204. When both Purkinje ventricular TAPS were recorded, channels 1 4 recorded the former. The ventricular TAPS were recorded on channel 2; channel 3 carries the voice signal. Channel 4 serves as the synchronization channel is played back on a separate reproduce head displaced 1.31 inches in front of the reproduce head for channels 1, 2, 3. The output of channel 4 acts as the synchronization pulse for the oscilloscope sweep generator, appearing I75 msec before its counterpart appears on channel I (tape transport speed of 7.5 inches/set). The purpose of the channel 4 is to provide accurate coupling of the

Journal

Journal of Applied PhysiologyThe American Physiological Society

Published: Sep 1, 1970

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