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Bio-Medical Electronics, IRE Transactions on

Issue 4 • Date Oct. 1962

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Displaying Results 1 - 17 of 17
  • [Table of contents]

    Publication Year: 1962 , Page(s): c1
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  • IRE Professional Group on Bio-Medical Electronics

    Publication Year: 1962 , Page(s): c2
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  • Editorial

    Publication Year: 1962 , Page(s): 213
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  • The Intrinsic Component Theory of Electrocardiography

    Publication Year: 1962 , Page(s): 214 - 221
    Cited by:  Papers (20)  |  Patents (1)
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    A new theory, the intrinsic component theory, is proposed for electrocardiography. This theory is based on the temporal characteristics rather than spatial orientations of the current sources and sinks in the heart. The theory may be stated as follows: the electrical activities of the heart may be decomposed into spatially nonorthogonal, stationary sets of current sources and sinks. The time variations of the magnitudes of all the sources and sinks belonging to the same set follow a single pattern of an intrinsic component which is orthogonal (uncorrelated) in the time domain to all other intrinsic components. The physical interpretation of intrinsic components is new to electrocardiography, although the mathematical tool employed is the well-known eigenvalue process. The intrinsic component theory, applied to a single dipole, provides us with a mathematical foundation for vectorcardiogram rotation, and a better basis for pathological ECG comparison and classification, especially by digital computers. View full abstract»

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  • Analog Computer Studies of Periodic Breathing

    Publication Year: 1962 , Page(s): 221 - 228
    Cited by:  Papers (3)
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    A classical clinical experiment, in which periodic breathing is induced in a normal subject by hyperventilation, has been successfully simulated on the high speed analog computer. The model, together with its underlying theory, is presented. Its applications to the study of individuals who experience persistent periodic (Cheyne-Stokes) breathing is indicated. View full abstract»

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  • The Development of the Electro-Magnetic Blood Flowmeter

    Publication Year: 1962 , Page(s): 228 - 235
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    Electromagnetic blood flowmeters were first constructed and used by Kolin in 1936 and, independently, by Wetterer in 1937. These early instruments consisted essentially of a large dc electromagnet, a pair of electrodes, and a string galvanometer; they made possible the recording of flow in exposed, large arteries of anesthetized animals under stringent experimental conditions. Modern electromagnetic flowmeters, using tiny, surgically implantable magnet-electrode assemblies and complex-electronic circuits, permit the recording of instantaneous and mean flows in large and small arteries in unanesthetized animals engaged in ordinary activities, as well as in anesthetized human patients whose vessels are exposed during surgical operations. Major steps in the development of the modern flowmeter include: 1) the early use of a sinusoidal ac-excited magnet to obviate the use of direct-coupled amplifiers and cumbersome, nonpolarizable electrodes; 2) the development of demodulation techniques for eliminating from the ac signal those induced voltages unrelated to flow: 3) the introduction of the squarewave and triangular-wave excited magnet to facilitate such signal-from-noise separation; 4) the miniaturization of magnetelectrode assemblies suitable for surgical implantation; and 5) improvements in circuitry resulting in greater electrical stability and freedom from noise. View full abstract»

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  • A Sensitive Contact Lens Photoelectric Eye Movement Recorder

    Publication Year: 1962 , Page(s): 236 - 243
    Cited by:  Papers (1)
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    A contact lens photoelectric eye movement recording system is described. The transducer is carried on a dental bite and the subject is permitted freedom of movement within the limitations of a trailing HT and signal lead, reasonable ambient illumination is permissible. Sensitivities of the order of 40-sec arc/cm of trace deflection are readily obtainable, with a dynamic range in excess of 56 db. Although primarily designed as a device for measuring the movements of eyes, the technique has been used for other purposes where it is required to measure displacement without loading the moving member. View full abstract»

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  • Electric Shock Hazard in Cardiology

    Publication Year: 1962 , Page(s): 244
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  • Automatic Blood Pressure Indicator

    Publication Year: 1962 , Page(s): 244 - 245
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  • Announcements

    Publication Year: 1962 , Page(s): 246
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  • PGBME Affiliates

    Publication Year: 1962 , Page(s): 247
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  • Index to IRE Transactions on Bio-Medical Electronics Volume BME-9, 1962

    Publication Year: 1962 , Page(s): 1 - 2
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  • Index to authors

    Publication Year: 1962 , Page(s): 3
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  • Index to subjects

    Publication Year: 1962 , Page(s): 3 - 4
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  • IRE Transactions on Bio-Medical Electronics Statement of Editorial Policy

    Publication Year: 1962 , Page(s): 4-a
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  • Information for authors

    Publication Year: 1962 , Page(s): 4a
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  • Institutional listings

    Publication Year: 1962 , Page(s): 4b
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Aims & Scope

This Transactions ceased publication in 1962. The current retitled publication is Biomedical Engineering, IEEE Transactions on

Full Aims & Scope