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Electrooculography (EOG) – Working Principle, Instrumentation, Signal Acquisition and Applications

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ECG Machine – Working Principle, Block Diagram, Components and Applications

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Introduction The Electrocardiogram (ECG) machine is one of the most important medical instruments used in modern healthcare. It is a diagnostic device designed to record the electrical activity of the heart over a period of time. Since cardiovascular diseases remain one of the leading causes of death worldwide, ECG technology plays a vital role in the early detection, diagnosis, monitoring, and treatment of various heart-related disorders. The human heart functions as a biological pump that continuously circulates blood throughout the body. To perform this function effectively, the heart muscles contract and relax in a coordinated manner. These contractions are initiated and controlled by electrical impulses generated within the heart. Whenever the heart beats, tiny electrical signals are produced, which can be detected at the surface of the skin using electrodes. An ECG machine captures these electrical signals, amplifies them, removes unwanted noise, and displays them in the form ...
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