1,721,101 research outputs found
Cardiovascular variability
No full textThe cardiovascular system is composed of a variety of specialized subsystems that interact with each other under the influence of internal and external inputs, including central commands, reflex mechanisms, and humoral factors. The concomitant action of all these subsystems produces continuous adjustments in the cardiovascular variables (e.g., heart rate, heart contractility, blood pressure, vascular tone, etc.) referred to as cardiovascular variability. A large body of evidence indicates that this variability includes linear and nonlinear components and conveys important biological information that might help in the understanding of the underlying physiology and facilitate diagnosis and prognosis of cardiovascular dysfunction
ELITE: A Goal Oriented Vision System for Moving Objects Detection
No full textA specially designed system for movement monitoring is here presented. The system has a two level architecture. At the first level, a hardware processor analyses in real-time the images provided by a set of standard TV cameras and, using a technique based on the convolution operator, recognizes in each frame objects that have a specific shape. The coordinates of these objects are fed to a computer, the second level of the system, that analyses the movement of these objects with the aid of a set of rules representing the knowledge of the context. The system was extensively tested on the field and the main results are reported.
The whole system can work as a controlling device in robotics or as a general real-time image processor as well as an automatic movement analyser in biomechanics, orthopedic and neurological medicine
Computer analysis of blood pressure and heart rate variability in subjects with normal and abnormal autonomic cardiovascular control
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Power Spectra of Blood Pressure in Normotensive and Spontaneously Hypertensive Rats: Relationship with Sympathetic Cardiovascular Control
No full textThe Wide Band Spectral Analysis: A New Insight Into Modulation of Blood Pressure, Heart Rate and Baroreflex Sensitivity
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