By Topic

Bio-medical Electronics, IEEE Transactions on

Issue 4 • Date Oct. 1963

Filter Results

Displaying Results 1 - 20 of 20
  • [Table of contents]

    Page(s): c1
    Save to Project icon | Request Permissions | PDF file iconPDF (81 KB)  
    Freely Available from IEEE
  • IEEE Professional Technical Group on Bio-Medical Electronics

    Page(s): c2
    Save to Project icon | Request Permissions | PDF file iconPDF (95 KB)  
    Freely Available from IEEE
  • The Scope of the BME Transactions

    Page(s): 129
    Save to Project icon | Request Permissions | PDF file iconPDF (98 KB)  
    Freely Available from IEEE
  • The Locus Concept and Its Application to Neural Analogs

    Page(s): 130 - 137
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3279 KB)  

    A new approach to analog simulation and study of the neuron is proposed. This approach is based on recent physiological evidence which indicates that the individual nerve cell is functionally much more complex than the classical view of a synaptic region coupled directly to a spike or impulse-generating region. At least two different intermediate regions have been found. One provides a reliable low-frequency timing or pacemaker function; the other provides nonlinear amplification of both the synaptic and the pacemaker potentials. In addition, the synaptic regions have been found to provide a large variety of complicated interneural transfer functions. In the view presently held by many physiologists, the spatial distribution of these functionally distinct regions within a single neuron would determine its information-processing capabilities. The behavior of each of the functionally distinct regions of the neuron is discussed in this paper. Simple transistor circuits which may be used to simulate individual regions are also described. Groups of these circuits may be connected to form analogs of the entire neuron or any part thereof. Special emphasis is placed here on the synaptic functions, with only a cursory discussion being given for the other regions. It is hoped that networks of the type described in this paper will be of considerable use in future studies of the information processing capabilities of single nerve cells. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Method of Measuring Eye Movemnent Using a Scieral Search Coil in a Magnetic Field

    Page(s): 137 - 145
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (4741 KB)  

    With the subject exposed to an alternating magnetic field, eye position may be accurately recorded from the voltage generated in a coil of wire embedded in a scleral contact lens worn by the subject. Using two magnetic fields in quadrature phase and two coils on the lens, one may measure horizontal, vertical and torsional eye movements simultaneously. The instrument described has an accuracy and linearity of about 2 per cent of full scale, a resolution of 15 seconds of arc and a bandwidth of 1000 cyles per second. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The magnetocardiogram-A new approach to the fields surrounding the heart

    Page(s): 145 - 149
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1795 KB)  

    Experiments have been conducted which reveal the existence of a detectable magnetic field associated with cardiac electrical activity. The relationship between the magnetic record and the electrocardiogram has been explored and it is shown that under certain conditions of axis orientation the voltage induced into a toroidal sensing element around the heart has the form of the first time derivative of the electrocardiogram. A formula based on Maxwell's equations has been developed to relate these two phenomona. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An Analysis of Desmedt's Titration Procedure

    Page(s): 149 - 152
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (737 KB)  

    The "titration" procedure is reviewed together with its application to the auditory system of the cat. The relevant portion of the auditory system is described by a mathematical model, and calculations based on it show the merit of titration over the direct observation of a stimulus-response ratio. The model yields a good approximation to Desmedt's experimental titration data. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Design of a Mechanical Cardiovascular Sinulator

    Page(s): 153 - 162
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2127 KB)  

    The purpose of this paper is to present the results of a study to determine design values for the basic hydraulic parameters of a mechanical pulse duplicator that reproduces as many of the significant source and load characteristics as possible. The method of approach used in this study has been to first investigate the physiological system to find what parameters are important to the production of the dynamic pressure-flow situation in the vicinity of the heart valves. A conceptual mechanical model was then developed that would use these same parameters to model the source and load characteristics. Finally, an electronic analog computer was used to find design values for the mechanical model and test its response as compared to published data on response of the human cardiovascular system. Design values are presented in tabular form. Waveform recordings of system responses are shown along with similar recordings reported in the literature, and comparisons are made. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electronically Controlled Stage for Systematic Scanning of Microscopic Areas

    Page(s): 163 - 170
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2262 KB)  

    An instrument has been developed to automatically scan a microscopic area for the quantitative evaluation of the light transmitting properties of biological materials on the cellular and subcellular levels. The specimen may be viewed through an aperture of selected size in the microscope both visually and electronically, while the slide is electronically manipulated to scan a rectangular area whose length and width are independently adjustable from 5 to 100¿. The slide is swept back and forth horizontally at a uniform rate which is adjustable from 0.4 to 4 ¿/sec. At the end of each horizontal sweep it is moved vertically by an adjustable step of 0.2 to 10 ¿. The scanning process proceeds entirely automatically until the selected area has been scanned. The stage motion is produced by thermal expansion and contraction in tungsten wires through which electronically controlled heating currents are passed. Precise control of the velocity and position of the stage is achieved by the use of feedback systems to control the heating currents in the wires so that their resistances, and therefore their temperatures, are accurately related to the values of analog control voltages. The relation between the horizontal and vertical stage displacements and the controlling voltages is linear within the precision of an occular micrometer. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electromagnetic Determination of Carotid Blood Flow in the Anesthetized Rat

    Page(s): 171 - 173
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2515 KB)  

    The paper describes the design and performance of the smallest iron core electromagnetic flow transducer built so far. The design is miniaturized as to the total volume of the device as well as to the size of the artery it accommodates. The use of this transducer for recording of blood flow in the smallest species of animal employed until now in blood flow research is described. Illustrations of pharmacological observations in anesthetized rats are presented. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Improved Transducer for External Recording of Arterial Pulse Waves

    Page(s): 173 - 175
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1638 KB)  

    This paper describes a new instrument with excellent low frequency response for recording arterial pulse wave forms. It uses a fluid filled chamber and a stiff diaphragm to which a set of semiconductor strain gages are cemented. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electrolysis-a factor in cardiac pacemaker electrode failure

    Page(s): 176
    Save to Project icon | Request Permissions | PDF file iconPDF (170 KB)  
    Freely Available from IEEE
  • Measurement of the Human Prostate Gland in Vivo with Magnetic Fields

    Page(s): 177
    Save to Project icon | Request Permissions | PDF file iconPDF (253 KB)  
    Freely Available from IEEE
  • In this issue - Technically

    Page(s): 177
    Save to Project icon | Request Permissions | PDF file iconPDF (253 KB)  
    Freely Available from IEEE
  • Announcements

    Page(s): 178
    Save to Project icon | Request Permissions | PDF file iconPDF (307 KB)  
    Freely Available from IEEE
  • IEEE Transactions on Bio-Medical Electronics

    Page(s): 1 - 3
    Save to Project icon | Request Permissions | PDF file iconPDF (443 KB)  
    Freely Available from IEEE
  • PTGBME Affiliates

    Page(s): 182
    Save to Project icon | Request Permissions | PDF file iconPDF (126 KB)  
    Freely Available from IEEE
  • IEEE Transactions on Bio-Medical Electronics Statement of Editorial Policy

    Page(s): 182-a
    Save to Project icon | Request Permissions | PDF file iconPDF (227 KB)  
    Freely Available from IEEE
  • Information for authors

    Page(s): 182a
    Save to Project icon | Request Permissions | PDF file iconPDF (227 KB)  
    Freely Available from IEEE
  • Institutional listings

    Save to Project icon | Request Permissions | PDF file iconPDF (73 KB)  
    Freely Available from IEEE

Aims & Scope

This Transactions ceased publication in 1963. The current retitled publication is Biomedical Engineering, IEEE Transactions on

Full Aims & Scope