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Highly flexible, analogue output control for use by the handicapped: The Acouswitch
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Tests on a shocking device—the stun gun
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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...
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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...
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Five-wheel unicycle system
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Effects of short-duration transients on cardiac rhythm
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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...
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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...
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Summary of cardiac fibrillation thresholds for 60 Hz currents and voltages applied directly to the heart
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Electronic games for physically handicapped people
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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...
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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...
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A simple linear pulse-to-pulse cardiac tachometer
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Ventricular fibrillation
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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...
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Techniques used in the study of the white-footed mouse under semi-natural conditions
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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...
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An inexpensive pulse transducer and cardiac tachometer
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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...
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A silastic interface