Temperature, respiration rate and pulse rate measurements. UNIT IV MEASUREMENT OF NON-ELECTRICALPARAMETERS Need for bio-amplifier - differential bio-amplifier, Impedance matching circuit, isolation amplifiers, Power line interference, Right leg driven ECG amplifier, Band pass filtering EEG – 10-20 electrode system, unipolar, bipolar and average mode. ECG – Einthoven’s triangle, standard 12 lead system. UNIT II BIOSIGNAL CHARACTERISTICS AND ELECTRODECONFIGURATIONSīiosignals characteristics – frequency and amplitude ranges. Recording problems - measurement with two electrodes Types of electrodes - surface, needle and micro electrodes and their equivalent circuits. Origin of bio potential and its propagation. UNIT I BIO POTENTIAL GENERATION AND ELECTRODES TYPES
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