IEEE Transactions on Biomedical Engineering

Issue 4 • April 1981

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Displaying Results 1 - 17 of 17
  • IEEE Transactions on Biomedical Engineering - Table of contents

    Publication Year: 1981, Page(s): c1
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  • IEEE Engineering in Medicine and Biology Society

    Publication Year: 1981, Page(s): c2
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  • Estimating Respiratory Mechanical Parameters in Parallel Compartment Models

    Publication Year: 1981, Page(s):313 - 317
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2014 KB)

    Four iterative parameter estimation algorithms were used to obtain estimates in three parallel compartment models of the respiratory system. The stability of the parameter estimates and the agreement between the forced random noise impedance data and the model's response were evaluated for each algorithm-model combination. The combination of a two-stage simplex algorithm with a five element model ... View full abstract»

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  • Spectral Analysis of Surface Motor Unit Action Potentials and Surface Interference Electromyogram

    Publication Year: 1981, Page(s):318 - 324
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2215 KB)

    Surface interference electromyograms (EMG's) were recorded from the tibial muscle of a healthy subject during 50 percent maximal contraction and single motor unit action potentials (MUAP's) were isolated by averaging from the interference pattern. The formation of the EMG was simulated by summing isolated MUAP's according to the statistical properties of the corresponding motor unit discharges. Po... View full abstract»

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  • Effects of Geometrical Uncertainties on Electrocardiography

    Publication Year: 1981, Page(s):325 - 334
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2899 KB)

    This paper investigates the influence of uncertainties in geometrical coordinates on calculated torso and epicardial potentials. Two types of sources, spherical epicardial and multipolar, are both considered. A concentric sphere model with the epicardial surface represented by a unit sphere and the torso surface represented by a spherical surface of radius 1.4 is utilized. While the representation... View full abstract»

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  • Spectra of Auditory Brainstem Responses and Spontaneous EEG

    Publication Year: 1981, Page(s):334 - 341
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3631 KB)

    Human auditory brainstem responses (ABR's) are sensory evoked potentials that can be recorded within a few milliseconds following a transient acoustic stimulus. This paper describes results of a simulation study that evaluated alternative techniques for estimating the spectrum of the ABR signal and of the background EEG. The effects of residual noise in the average signal, the number of responses ... View full abstract»

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  • Simultaneous Measurement of Liquid Velocity and Oxygen Tension with Catheter-Tip Electrodes - The Dual Cathode Polarographic Method

    Publication Year: 1981, Page(s):342 - 348
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2474 KB)

    The application of a dual-cathode catheter system to the simultaneous measurement of oxygen tension (pα) and velocity (V) has been studied under conditions similar to those in human arteries. The catheter tip contained a large silver electrode (16 mm2) and a small silver electrode (0.035 mm2) which were connected to a common polarizing power supply and external silver... View full abstract»

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  • A New Technique for the Suppression of the MECG

    Publication Year: 1981, Page(s):348 - 354
    Cited by:  Papers (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4860 KB)

    After a review of the different techniques in use up to now for the detection of an interference-free abdominal fetal electrocardiogram (FECG), with the limitations of these techniques indicated, a new technique is described which does not suffer from these limitations. This technique is based on an optimization procedure applied to the multiplication coefficients of six independent abdominal sign... View full abstract»

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  • The Simulation of the Abdominal MECG

    Publication Year: 1981, Page(s):354 - 357
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1787 KB)

    In order to obtain an insight into the surface potential distribution of the maternal electrocardiogram (MECG) on the abdomen during pregnancy, a simulation model is set up. As a function of the shape of the abdomen and the internal conduction difference between uterus and surroundings, the surface potentials are calculated on a ring at the umbilicus level for the x, y, and z components of the mat... View full abstract»

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  • A Simple Circuit to Reduce the Input Capacitance of Microelectrode Amplifiers

    Publication Year: 1981, Page(s):358 - 359
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (439 KB)

    There are several specialized applications which require amplifiers with very low input capacitance. Two field effect transistors (FET's) can be cascaded in a source follower configuration to drive the drain of the input FET. The cascaded source follower provides at least an order of magnitude decrease in input capacitance. The cascaded source follower can be added to existing amplifiers or incorp... View full abstract»

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  • Programmable Miniature Backpack Stimulator for Chronic Biomedical Studies

    Publication Year: 1981, Page(s):359 - 362
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (734 KB)

    This communication reports on a novel stimulator designed for long-term physiological studies. Stimulator output can be turned "on" and "off," in a cyclic fashion, by a programmable modulation signal. Current output is relatively unaffected by changes of external tissue resistance. Low power consumption and small size make the device portable and eliminate the need for connection leads from the ex... View full abstract»

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  • Feedback Provides Stable Bath Ground for Intracellular Recording and Stimulation

    Publication Year: 1981, Page(s):362 - 364
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (710 KB)

    It was found that passage of long-duration current pulses through one microelectrode produced changes in the potential of the ground electrode which were recorded in a second, independent micro-electrode. A simple negative feedback circuit was used to maintain a constant ground electrode potential even during the passage of large long-duration current pulses. View full abstract»

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  • Human Cervico-Ocular Reflex in the Presence of a Visual Stimulus

    Publication Year: 1981, Page(s):364 - 366
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (706 KB)

    Of the three principal oculomotor reflexes, the cervico-ocular (COR), i.e., neck-eye reflex has the least effect in the normal adult. Measurement of the COR has been defined only in isolation from the other reflexes. Here it is shown that the COR exists in the presence of a visual stimulus, but that its gain is small-so small as to argue against considering the COR as being functionally significan... View full abstract»

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  • Assessment of Scoliosis Using Three-Dimensional Analysis

    Publication Year: 1981, Page(s):366 - 371
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4101 KB)

    A computerized radiographic method is described for assessing scoliosis. Three radiographs of the spine are exposed using a specially constructed device to fix the positions of the films and the patient. Computer-generated color graphics displays are utilized to present objective and subjective information to the user. The system was validated by using phantoms and it is currently implemented in t... View full abstract»

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  • 34th Annual Conference on Engineering in Medicine and Biology

    Publication Year: 1981, Page(s): 371a
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  • IEEE Transactions on Biomedical Engineering Statement of Editorial Policy

    Publication Year: 1981, Page(s): 371-b
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  • Institutional listings

    Publication Year: 1981, Page(s): 371c
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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