IEEE Transactions on Biomedical Engineering

Issue 12 • Dec. 1979

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Displaying Results 1 - 16 of 16
  • IEEE Transactions on Biomedical Engineering - Table of contents

    Publication Year: 1979, Page(s): c1
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  • IEEE Engineering in Medicine and Biology Society

    Publication Year: 1979, Page(s): c2
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  • An IC Control Unit for Generating Random and Nonrandom Events

    Publication Year: 1979, Page(s):649 - 655
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3146 KB)

    A system has been designed that wil generate user-controlled temporal events and two independent sequences of random events over selectable time periods. The duration and frequency of the events is set by front panel controls over a temporal range determined by the user. This system is suitable for automating experiments in biological and behavioral research. View full abstract»

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  • Theoretical Analysis of Diffuse Reflectance from a Two-Layer Tissue Model

    Publication Year: 1979, Page(s):656 - 664
    Cited by:  Papers (125)  |  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2572 KB)

    A three-dimensional diffuse reflectance equation for a two-layer tissue model was developed using photon diffusion theory. In this model, tissue was considered to consist of two homogeneous isotropically scattering layers whose scattering and absorption constants were expressed as a linear sum of those of whole blood and a blood-free tissue component; tissue hemoglobin content and oxygen saturatio... View full abstract»

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  • On Ultrasonic MTI Measurement of Velocity Profiles in Blood Flow

    Publication Year: 1979, Page(s):665 - 671
    Cited by:  Papers (13)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1692 KB)

    A theoretical analysis of Doppler frequency estimators proposed to be used in ultrasonic moving target indicator (MTI) measurements of velocity profiles in blood flow is given. The estimators give an output in the form of a single analog voltage and the relation of the output to the Doppler spectrum is discussed. Three new estimators are also proposed. All estimators work fairly well for narrow-ba... View full abstract»

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  • Dynamic Light-Dark Adaptation in the Rabbit ERG

    Publication Year: 1979, Page(s):672 - 681
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1922 KB)

    The early dynamics of light and dark adaptation in the rabbit retina are measured by the electroretinogram (ERG). The amplitudes and latencies of the a-wave and b-wave are shown in steady state and in transition between states. The results are used in a discussion of the retinal origins of the a-wave and b-wave. View full abstract»

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  • Instrumentation for Automated Study of Human Pupil Responses

    Publication Year: 1979, Page(s):682 - 685
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1679 KB)

    Instrumentation has been developed for studying the responses of the human pupil to different kinds of visual stimuli. This involves stimulating the eye visually, acquiring pupillary diameter data samples, analyzing them, and displaying and storing the results All of these functions are controlled by a minicomputer. The apparatus is a convenient research tool for studying the visual system of colo... View full abstract»

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  • Electrical Characteristics of Flowing Blood

    Publication Year: 1979, Page(s):686 - 695
    Cited by:  Papers (47)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4182 KB)

    Erythrocyte orientation, deformation, and axial accumulation cause differences in resistance between flowing and resting blood. Through theoretical calculations and experimental measurements, we studied the effects of these factors and of sinusoidal and pulsatile flow on blood resistivity. The effect of axial accumulation is least significant. Frequency characteristics of blood resistance under si... View full abstract»

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  • A Multiplexing System for Multichannel Signal Averaging of the Visual Evoked Response

    Publication Year: 1979, Page(s):696 - 699
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1459 KB)

    Time-division multiplexing allows 24 channels of evoked potential data to be recorded on a seven track instrumentation tape recorder and later played back into a signal averager where it is simultaneously demultiplexed and averaged. Complimentary metal-oxide-semi-conductor (CMOS) switches provide a simple, low-cost way of increasing the number of recorded channels when the bandwidth of the recorde... View full abstract»

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  • A Digital Filter for the ORS Complex Detection

    Publication Year: 1979, Page(s):700 - 703
    Cited by:  Papers (111)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1510 KB)

    The five step digital filter has been developed which removes components other than those of QRS complex from the recorded electrocardiogram (ECG). The final step of the filter produces a square wave whose on-intervals correspond to the segments with QRS complexes in the original wave. View full abstract»

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  • A Wrist-Mounted, Motion-Activated, Audible Training Unit for Visually inpaired Infants

    Publication Year: 1979, Page(s):704 - 707
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1554 KB)

    The design and preliminary evaluation of a motion-activated audible alarm unit is presented. The unit is to replace eye-hand coordination in visually impaired infants by ear-hand coordination. The unit produces a 4096 Hz tone only during the time it is in motion in any direction. View full abstract»

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  • Comments on "Distortion Suppression in Neuromuscular Information Transmission Due to Interchannel Dispersion in Muscle Spindle Firing Thresholds"

    Publication Year: 1979, Page(s):707 - 709
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    The variation in firing thresholds among neurons operating in parallel can serve to dramatically reduce signal distortion. However, the amount of variation required for significant distortion suppression is less than that previously reported by Milgram and Inbar. View full abstract»

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  • An Ultrasonic Bladder-Volume Sensor

    Publication Year: 1979, Page(s):709 - 711
    Cited by:  Papers (6)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1547 KB)

    Loss of bladder sensation is a common clinical problem, particularly in diabetes mellitus. A pocket-size ultrasonic bladder-volume sensor has been constructed and tested with successful results. This paper describes the sensor and presents results from its use on healthy volunteers. View full abstract»

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  • 1979 Index IEEE Transactions on Biomedical Engineering Vol. BME-26

    Publication Year: 1979, Page(s):1 - 17
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  • IEEE Transactions on Biomedical Engineering Statement of Editorial Policy

    Publication Year: 1979, Page(s): 17-a
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  • Institutional listings

    Publication Year: 1979, Page(s): 17b
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Aims & Scope

IEEE Transactions on Biomedical Engineering contains basic and applied papers dealing with biomedical engineering. Papers range from engineering development in methods and techniques with biomedical applications to experimental and clinical investigations with engineering contributions.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Bin He
University of Minnesota