The implementation of a knowledge-based expert system to check on inpatients' conditions is described. In our development of a bedside computerized ICU, graphical user interface (GUI) and graphical visualization have been extensively exploited to facilitate the natural and effective representation…

A knowledge-based expert system was developed to automatically assess the level of EEG abnormality of pediatric patients monitored in the ICU. The system receives six hours of 8-channel EEGs and classifies the background EEG as one of seven abnormality levels.,…

A new, distributed model of the primate oculomotor system is presented. This model generates saccades (rapid eye movements) of various amplitudes, and it is able to exhibit various saccade-related phenomena, including multiple and interrupted saccades. The model differs from those…

Quantification of physiological functions with positron emission tomography requires knowledge of the arterial radioactivity concentration. Automated blood sampling systems increase the accuracy of this measurement, particularly for short-lived tracers such as oxygen-15, by reducing the sampling interval to a fraction…

In order to develop a comprehensive model of the motor control system the time-varying nature of joint dynamics must be addressed. However, it has not previously been possible to quantitatively observe changes in joint dynamics during a transition of state.…

Porous metals are often used in orthopaedic load-bearing applications because they promote and direct bone ingrowth while maintaining their mechanical integrity for long periods in physiological environments. However, the influence of microstructural parameters of three-dimensional metallic scaffolds on osteogenic cell…

A knowledge-based expert system was developed to assess the level of abnormality in the brain electrical activity of pediatric patients monitored in the intensive care unit. Six hours of an 8-channel EEG record serves as the input to the monitoring…

In the first of three manuscripts, we describe a study in which we measured the electromyographic (EMG) and mechanical responses to brief stretches of the ankle plantarflexors applied at various instants during an imposed movement of the ankle. The results…

A prototype electrostatic imager has been developed for megavoltage portal imaging in radiation therapy. The imager utilizes amorphous selenium (a-Se) with a front metal plate as the imager receptor and a high resolution voltmeter probe for image readout. Imaging characteristics…

The goal of this study was to develop and validate a system for the telemetric measurement of in vivo compressive intervertebral loads in the sheep, and to measure these loads in a variety of activities., A miniature load cell and…