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Biomedical Engineering, IEEE Transactions on

Issue 3 • Date March 1986

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Displaying Results 1 - 22 of 22
  • IEEE Transactions on Biomedical Engineering - Table of contents

    Publication Year: 1986 , Page(s): c1
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    Freely Available from IEEE
  • IEEE Engineering in Medicine and Biology Society

    Publication Year: 1986 , Page(s): c2
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  • The Effects of Thoracic Inhomogeneities on the Relationship Between Epicardial and Torso Potentials

    Publication Year: 1986 , Page(s): 273 - 284
    Cited by:  Papers (34)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3144 KB)  

    This study examines the effects of the lungs, spine, sternum, and the anisotropic skeletal muscle layer on the relationship between torso and epicardial potentials. Boundary integral equations representing potentials on the epicardial surface, the torso surface, and the internal conductivity interfaces were solved yielding a set of transfer coefficients valid for any source inside the epicardium a... View full abstract»

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  • A Two-Part Model for Determining the Electromagnetic and Physiologic Behavior of Cuff Electrode Nerve Stimulators

    Publication Year: 1986 , Page(s): 285 - 293
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2638 KB)  

    A two-part model for determining the electrophysiological behavior of a cuff electrode designed for unidirectional nerve stimulation is presented. In the first part, a model is described which evaluates the potential field of the cuff electrode system in the absence of a nerve. The model recognizes boundary conditions through the specification of secondary sources on the cuff; the unknown source s... View full abstract»

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  • Role of Light Scatterng in Whole Blood Oximetry

    Publication Year: 1986 , Page(s): 294 - 301
    Cited by:  Papers (30)  |  Patents (13)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2621 KB)  

    We investigated the role of light scattering in whole blood oximetry by transmission spectrophotometry. To delineate the role of scattering and absorbance in the measurement of oxyhemoglobin saturation, we applied Twersky's theory of radiation scattering and measured the apparent optical density of whole blood and hemoglobin solutions. The optical density versus hematocrit relationship predicted b... View full abstract»

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  • Noninvasive Versus Invasive Doppler Renal Blood Velocity and Flow Measurements

    Publication Year: 1986 , Page(s): 302 - 307
    Cited by:  Papers (3)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2278 KB)  

    We compared simultaneous noninvasive and invasive determinations of blood velocity and flow in the renal arteries of 5 mongrel dogs. Noninvasive measurements of blood velocity spectra (¿FN) were made using an ultrasonic echo-Doppler duplex scanner. Vessel diameters (DN) and Doppler angles (¿N) were measured from sector images of the renal artery. Invasive measurements of blood velocity spectra (... View full abstract»

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  • Software System for Neuron Classification Based on Simple Parameters

    Publication Year: 1986 , Page(s): 308 - 314
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2326 KB)  

    A software system was produced to digitize neuronal images and to extract a set of simple parameters from the digitized images. The system was designed to classify a large number of neurons based on simple and automatically extracted features. The system was used to characterize catfish retinal ganglion cells. Several examples of parameter extraction and classification are presented. View full abstract»

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  • A Tubular Self-Synchronous Motor for Artificial Heart Pump Drive

    Publication Year: 1986 , Page(s): 315 - 319
    Cited by:  Papers (6)  |  Patents (10)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (3238 KB)  

    Buildup and test of a permanent magnet, tubular, self-synchronous motor and the associated microprocessor-based power conditioning link are discussed. The motor is controlled for variable frequency axial oscillation demonstrating suitability to function as an energy conversion intermediary between a battery pack and an artificial heart pumping element. Strengths and weaknesses of the test bed syst... View full abstract»

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  • Telemetry System for Stimulation and Monitoring of Freely Moving Patients

    Publication Year: 1986 , Page(s): 320 - 326
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2159 KB)  

    A telemetry system is described in which the patient carries small stimulator and monitor units. Typically, the wrist is stimulated with 0.5 ms alternating pulses whose frequency and current (up to 10 mA peak) are remotely controlled by the neurophysiologist via a 20 MHz carrier. At the same time, the synchronized EEG-somatosensory evoked potential is transmitted from C2 via a 100 MHz carrier. The... View full abstract»

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  • The Forward Problem in Electroneurography I: A Generalized Volume Conductor Model

    Publication Year: 1986 , Page(s): 327 - 334
    Cited by:  Papers (20)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2351 KB)  

    We describe a generalized volume conductor model for the compound action potential (CAP) of a peripheral nerve in situ. The extracellular single fiber action potentials (SFAP's), the constituting elements of the CAP, are expressed in terms of the intracellular action potentials and of the effect of volume conduction using a convolution formulation. The model incorporates variations in the intracel... View full abstract»

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  • The Forward Problem in Electroneurography II: Comparson of Models

    Publication Year: 1986 , Page(s): 335 - 341
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1375 KB)  

    We present a comparison of the various model descriptions of the evoked compound action potential (CAP) of a peripheral nerve as have appeared in literature. First, a survey is given of both theoretical and empirical model formulations, concentrating upon the different descriptions of SFAP variation among the active fibers. The relationships between the various model formulations are clarified and... View full abstract»

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  • Intramuscular Electrical Activation of the Phrenic Nerve

    Publication Year: 1986 , Page(s): 342 - 351
    Cited by:  Papers (15)  |  Patents (9)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2051 KB)  

    In acute studies of 18 supine anesthetized dogs, the diaphragm was activated using intramuscular monopolar stimulating electrodes placed bilaterally within 2 cm of the entry point of the phrenic nerve. Inspiratory contraction was evoked using 10 to 40 Hz bursts of balanced charge biphasic stimulus pulses. The pulse width during a burst was ramped exponentially from 0 to 100 ¿s with a time constan... View full abstract»

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  • Evaluation of Simple Algorithms for Spectral Parameter Analysis of the Electroencephalogram

    Publication Year: 1986 , Page(s): 352 - 358
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2512 KB)  

    Simple autoregressive moving-average (ARMA) and autoregressive (AR) algorithms were tested for use in spectral parameter analysis (SPA) of the background electroencephalogram (EEG). In studies on simulated EEG, both algorithms successfully extracted estimates of the spectral component parameters, and their performance was relatively independent of assumed model order. The ARMA algorithm was unbias... View full abstract»

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  • Gaussian and Poisson Blink Statistics: A Preliminary Study

    Publication Year: 1986 , Page(s): 359 - 361
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (725 KB)  

    Gaussian and Poisson statistics are applied to a simple counting experiment measuring fluctuations of the total number of blinks during a 30-s interval. Using nine subjects, it is found that the blink rate can vary by a factor of 5 from one individual to the next, with an average interblink delay time of 2.28 ±1.35 s. Agreement between theory and experiment is significant at the 0.97 level. Poten... View full abstract»

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  • A Device to Provide Respiratory-Mechanical Unloading

    Publication Year: 1986 , Page(s): 361 - 365
    Cited by:  Papers (11)  |  Patents (7)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (1003 KB)  

    A commercially available and widely used servo-controlled ventilator has been modified to provide controlled inspiratory resistive unloading of the human respiratory system. This is achieved by establishing a positive mouth pressure throughout inspiration in a constant proportion to instantaneous flow, i.e., the ratio of mouth pressure to flow, which defines the "assistance," remaining constant. T... View full abstract»

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  • Roundoff Errors in Signal Averaging Systems

    Publication Year: 1986 , Page(s): 365 - 366
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (391 KB)  

    In biomedical signal averaging applications where a small repetitive signal is to be extracted form a very noisy waveform (noise variance ¿2n), the A/D converter range is set at ±A¿n where A typically has a value of 3 or 4. In this case, A/D roundoff noise using a (b + 1)-bit A/D converter degrades the SNR of the resulting signal estimate by an amount slightly greater than 10 log (1 + A2¿2b/12... View full abstract»

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  • Character Pattern Recognition for a Telecommunication Aid for the Deaf

    Publication Year: 1986 , Page(s): 366 - 370
    Cited by:  Papers (2)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2098 KB)  

    To communicate via the telephone with the hearing impaired, systems that transmit characters that appear on standard telephone keypads to aids that decode telephone audio tones representing characters (dual tone multiple frequency (DTMF) systems) have been used. However, due to the existence of three letters on each key, several keystrokes are required to represent the desired character without am... View full abstract»

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  • Identification of Time-Varying Ventricular Parameters During the Ejection Phase

    Publication Year: 1986 , Page(s): 370 - 378
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandAbstract | PDF file iconPDF (2039 KB)  

    Physical parameters representing the energy components of the cardiac pump related to inertance, resistance, and compliance are developed. A method utilizing estimation techniques is presented to determine these time-varying parameters as well as the end diastolic volume. The method is applied to the ejection phase, using pressure and flow measured at the root of the aorta and at the pulmonary art... View full abstract»

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  • Call for Papers Special Issue on Signal Processing

    Publication Year: 1986 , Page(s): 379
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  • Call for Papers Special Issue on Adaptive Control and Drug Delivery Systems

    Publication Year: 1986 , Page(s): 380
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  • IEEE Transactions on Biomedical Engineering Statement of Editorial Policy

    Publication Year: 1986 , Page(s): 380-a
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  • Institutional listings

    Publication Year: 1986 , Page(s): 380b
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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
Department of Biomedical Engineering