By Topic

# IEEE Transactions on Biomedical Engineering

## Filter Results

Displaying Results 1 - 18 of 18

Publication Year: 1972, Page(s): c1
| PDF (660 KB)
• ### IEEE Engineering in Medicine and Biology Group

Publication Year: 1972, Page(s): c2
| PDF (171 KB)
• ### A Multistage Process for Computing Virtual Dipolar Sources of EEG Discharges from Surface Information

Publication Year: 1972, Page(s):1 - 12
Cited by:  Papers (72)  |  Patents (2)
| | PDF (5077 KB)

A mathematical model consisting of a homogeneous spherical conductive medium was used to simulate the human head. A current dipole situated in the interior of the sphere produces, on the surface, a theoretical distribution of potential similar to certain EEG activities recorded on the human scalp. We propose a multi-stage method for computing the six parameters of a such virtual dipolar source by ... View full abstract»

• ### Analog Computer Model for the ACTH-Glucocorticoid System

Publication Year: 1972, Page(s):13 - 20
Cited by:  Papers (1)
| | PDF (2239 KB)

A closed-loop analog computer model for corticosterone dynamics in the male rat is presented in an attempt to examine some existing experimental evidence which suggests contradictory characteristics of the ACTH-glucocorticoid system. First-order compartmental kinetics model the removal of ACTH and corticosterone from the blood. Nonlinear models are used to describe the release of corticosterone by... View full abstract»

• ### TOMOSYNTHESIS: A Three-Dimensional Radiographic Imaging Technique

Publication Year: 1972, Page(s):20 - 28
Cited by:  Papers (184)  |  Patents (25)
| | PDF (7683 KB)

A three-dimensional radiographic imaging system has been developed, and is presently being clinically evaluated. Twenty conventional radiographs are reduced and reprojected into a display volume according to a geometry which matches the X-ray source geometry. The images are integrated on a viewing screen and produce the tomographic plane corresponding to the screen's position. Planes parallel and ... View full abstract»

• ### An Active Feedback System for Stabilizing Visual Images

Publication Year: 1972, Page(s):29 - 33
Cited by:  Papers (9)
| | PDF (1426 KB)

In normal vision, eye movements cause the image to move on the retina. Special apparatus can stabilize the image on the retina so it cannot move, and vision fades away. Previous methods for stabilizing the image were either optical systems or complex computer-controlled feedback systems. A simpler feedback system is presented which detects eye motion and rotates a mirror through which the target i... View full abstract»

• ### Transmission of Ultrasound Through the Larynx as a Means of Determining Vocal-Fold Activity

Publication Year: 1972, Page(s):34 - 37
Cited by:  Papers (7)
| | PDF (3692 KB)

A procedure is reported for determining vocal-fold closure using a technique of transmitting continuous-wave ultrasound through the larynx. A frequency of 3.2 MHz and an applied acoustic power of less than 1 mV/cm2 was used. Physiological interpretation of received signals is discussed in terms of glottal closure, vocal-fold thickness, vocal-fold vibratory pattern, and thyroid cartilage oss... View full abstract»

• ### Mock Circulatory System for Intra-Aortic Balloon Testing

Publication Year: 1972, Page(s):38 - 46
Cited by:  Papers (8)
| | PDF (4955 KB)

A mock circulatory system (MCS) was constructed for testing intra-aortic balloon (IAB) temporary heart-assist devices. The MCS consists of a left heart analog, compliant arteries, peripheral resistance, and venous return. Design objectives and operating characteristics of the MCS are presented. The results of a number of studies to determine the effectiveness of intra-aortic balloon devices under ... View full abstract»

• ### A Control System for Long-Term Ventilation of the Lungs

Publication Year: 1972, Page(s):47 - 53
Cited by:  Papers (3)  |  Patents (3)
| | PDF (1747 KB)

A respirator control system based on a variant process model and optimization of system performance is described. The system attempts to minimize the harmful effects of positive pressure ventilation while meeting the ventilatory requirement of the patient. As alveolar pressure is indicative of respiratory dynamics, it has been used as control parameter. Desired alveolar pressure is derived from a ... View full abstract»

• ### Hot Spots Generated in Conducting Spheres by Electromagnetic Waves and Biological Implications

Publication Year: 1972, Page(s):53 - 58
Cited by:  Papers (95)
| | PDF (803 KB)

The distribution of the heating potential generated by an incident electromagnetic plane wave on a conducting sphere simulating the human head was investigated. It was found that for a sphere of 10-cm radius having the same electrical characteristics as those of biological tissues, no hot spots are generated inside. While at lower frequencies the heating is relatively uniform with some polarizatio... View full abstract»

• ### An Inexpensive Optical Scanner for the Laboratory Computer

Publication Year: 1972, Page(s):59 - 60
Cited by:  Papers (1)
| | PDF (1610 KB)

An electrooptical attachment for an incremental plotter was developed for use with a laboratory computer to provide of digitizing drawings, waveforms, and other graphic Excellent sensitivity was achieved with components than \$100. Fiber optics, solid-state devices, and a simple incandescent light source were employed. View full abstract»

• ### A Simple Electronic Analog of the Squid Axon Membrane: The NEUROFET

Publication Year: 1972, Page(s):60 - 63
Cited by:  Papers (19)
| | PDF (3047 KB)

A simple electronic circuit is proposed as an analog of the excitable membrane. It is based on the Hodgkin-Huxley model and their squid axon voltage clamp data. The simulated potassium and sodium conductances are reproduced satisfactorily and the electronic action potentials are very similar to the experimentally recorded ones. Since this analog contains only a few electronic elements, it is small... View full abstract»

• ### Phase Detection of R Waves in Noisy Electrocardiograms

Publication Year: 1972, Page(s):63 - 66
Cited by:  Papers (11)
| | PDF (832 KB)

Ventricular fibrillation, a form of electrical instability of the myocardium, is strongly suspected to be a significant contributor to sudden'' coronary fatalities. Present evidence indicates that ventricular fibrillation is often preceded by other forms of abnormal electrical activity of the heart, especially ventricular premature beats (VPBs). Early detection of the presence of VPBs in the ele... View full abstract»

• ### Letters to the Editor

Publication Year: 1972, Page(s): 67
Cited by:  Papers (1)
| PDF (312 KB)
• ### Abstracts of dissertations

Publication Year: 1972, Page(s):68 - 71
| PDF (1100 KB)
• ### Announcement

Publication Year: 1972, Page(s): 72
| PDF (238 KB)
• ### Keyword abstracts

Publication Year: 1972, Page(s):72 - 73
| PDF (419 KB)
• ### Contributors

Publication Year: 1972, Page(s):74 - 76
| PDF (3958 KB)

## 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