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25 Result(s)

within O. Z. Roy Remove this filter Biomedical Engineering and Bioengineering Remove this filter

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  1. No Access

    Article

    Highly flexible, analogue output control for use by the handicapped: The Acouswitch

    L. W. Korba, G. Park, R. Farley, O. Z. Roy… in Medical and Biological Engineering and Com… (1991)

  2. No Access

    Article

    Tests on a shocking device—the stun gun

    O. Z. Roy, A. S. Podgorski in Medical and Biological Engineering and Computing (1989)

  3. No Access

    Article

    Measurement of regional cardiac fibrillation thresholds

    The paper describes the measurement of 60 Hz cardiac fibrillation thresholds for five different regions on the heart. Both bipolar and unipolar measurements indicate that the most sensitive portion of the hear...

    O. Z. Roy, B. J. Trollope, J. R. Scott in Medical and Biological Engineering and Computing (1987)

  4. No Access

    Article

    60 Hz ventricular fibrillation thresholds for large-surface-area electrodes

    The paper describes a series of animal experiments in which large-surface-area disk electrodes were used to study the current density required for ventricular fibrillation. The electrical currents were introdu...

    O. Z. Roy, J. R. Scott, B. J. Trollope in Medical and Biological Engineering and Computing (1986)

  5. No Access

    Article

    Five-wheel unicycle system

    O. Z. Roy, N. D. Durie, R. L. Farley… in Medical and Biological Engineering and Com… (1985)

  6. No Access

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    Effects of short-duration transients on cardiac rhythm

    Monte B. Raber, O. Z. Roy in Medical and Biological Engineering and Computing (1985)

  7. No Access

    Article

    Effects of short-duration transients on cardiac rhythm

    Cardiac stimulation thresholds of short-duration large-amplitude electrical transients were studied. An isolated rabbit heart model was used and transients were applied directly to the heart through electrodes...

    O. Z. Roy, A. J. Mortimer, B. J. Trollope… in Medical and Biological Engineering and Com… (1984)

  8. No Access

    Article

    System for the measurement of the effects of ultrasound on membrane electrical and mechanical properties of the myocardium

    A system has been developed to measure the effects of ultrasound on membrane electrical properties and muscle contractile parameters. A specially designed muscle bath was constructed. Measurement instrumentati...

    A. J. Mortimer, B. Bresden, G. V. Forester… in Medical and Biological Engineering and Com… (1984)

  9. No Access

    Article

    Summary of cardiac fibrillation thresholds for 60 Hz currents and voltages applied directly to the heart

    O. Z. Roy in Medical and Biological Engineering and Computing (1980)

  10. No Access

    Article

    Electronic games for physically handicapped people

    J. W. Arenson, O. Z. Roy, G. C. Park… in Medical and Biological Engineering and Com… (1980)

  11. No Access

    Article

    Mechanical pointer for use with handicapped children

    For the nonverbal cerebral palsy child, communication with the outside world is a major problem. With those c.p. children who do not suffer complete limb paralysis, limb movement is at least very spastic and p...

    G. C. Park, O. Z. Roy, A. Warrick, C. Côté in Medical and Biological Engineering and Com… (1979)

  12. No Access

    Article

    60 Hz ventricular fibrillation and rhythm thresholds and the nonpacing intracardiac catheter

    This paper presents fibrillation and rhythm disturbance thresholds obtained from saline-filled intracardiac catheters. Results from the endocardium and pericardium are presented and the effect of catheter cros...

    O. Z. Roy in Medical and biological engineering (1975)

  13. No Access

    Article

    A simple linear pulse-to-pulse cardiac tachometer

    O. Z. Roy, R. W. Wehnert in Medical and biological engineering (1974)

  14. No Access

    Article

    Ventricular fibrillation

    O. Z. Roy in Medical and biological engineering (1974)

  15. No Access

    Article

    Improvements in biogalvanic energy sources

    The paper describes improvements made in biogalvanic energy sources, which significantly prolong their life and reliability. The results of long-termin vivo implants are presented, and comparisons are made betwee...

    O. Z. Roy, R. W. Wehnert in Medical and biological engineering (1974)

  16. No Access

    Article

    Techniques used in the study of the white-footed mouse under semi-natural conditions

    O. Z. Roy, R. A. Gaertner, J. S. Hart… in Medical and biological engineering (1972)

  17. No Access

    Article

    A more efficient waveform for cardiac stimulation

    This paper describes a waveform which is more efficient than the standard square pulse for use in chronic cardiac pacing. The experimental techniques are discussed and long term results obtained from animals i...

    O. Z. Roy, R. W. Wehnert in Medical and biological engineering (1971)

  18. No Access

    Article

    An inexpensive pulse transducer and cardiac tachometer

    O. Z. Roy in Medical and biological engineering (1970)

  19. No Access

    Article

    Canine myocardial thresholds and tissue responses to chronic pacing

    This paper describes the effects of chronic pacing on the canine cardiac muscle. Results on electrical threshold levels, inter-electrode cardiac resistance and the pathology of the heart muscle at the stimulat...

    O. Z. Roy, H. A. Heggtvett, W. Waddell in Medical and biological engineering (1969)

  20. No Access

    Article

    A silastic interface

    O. Z. Roy in Medical and biological engineering (1968)

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