Pathological variations of hemodynamic parameters are associated with the myocardial tissue dysfunctions that alter the normal, physiological pathway of the electric signal propagation, consequence to the electric activity of the heart that triggered them. From the nonlinear dynamics of the excitable cardiac...
To compress an electrical signal (S) converted into a binary sign signal (VZ) by means of delta modulation, four data words (D1-D4) are generated in the order of occurrence of four possible states (I-IV), which data words in each case define the state (I-IV) and its duration (L1...
compound electrical signal of the heart. This tracing of the electrical signal is theelectrocardiogram (ECG), also commonly abbreviated EKG (K coming kardiology, from the German term for cardiology). Careful analysis of the ECG reveals a detailed picture of both normal and abnormal heart...
signal transmission. The higher the impedance is, the more power is lost, the less sensitive is the device. Standard impedance is measured at a frequency of 1 kHz. The effective impedance can be understood withequivalent circuit models. Neuron activity spreading through the extracellular medium ...
In wire transmission systems with frequency-division multiplexing, the communication range can be increased by decreasing the effects of noise, which builds up as a signal progresses along the line. This can be achieved through the use of amplifiers, which are operated in common for all the sign...
closed circuit,loop- a complete electrical circuit around which current flows or a signal circulates computer circuit- a circuit that is part of a computer delay line- a circuit designed to introduce a calculated delay into the transmission of a signal ...
An electrode probe (1), in particular for electrical stimulation of the heart from the interior of the esophagus, is constructed on the basis of the new finding that the distance from the transition between the stomach and the esophagus to the transition between the left atrium and the left ...
Conducting System of the Heart (cont) Action potentials pass through the AV node and along the AV bundle, which extend from the AV node, through the fibrous skeleton, into the interventricular septum Conducting System of the Heart (cont) The AV bundle divides into right and left bundle branche...
The invention relates to a process and a means for detecting a series of abnormal events in an electrical signal, especially the depolarisation signal (IS) of a heart (9). In this case, the depolarisation signal (IS) is compared with a defined threshold value in a detector circuit (2),...
a device for the signal analysis of the electrical potentialverlaufes the herzerregung for example in ischemia on heart and / or a cardiac arrhythmia is that the potentialverlauf through a elektrodenanordnung with at least three electro... ZEHENDER MANFRED DR. - EP 被引量: 0发表: 1994年 ...