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On the other hand, the pulse rate is measured as follows. • By palpating an artery near the skin surface, such as the carotid artery, measure the pulse count of a blood vessel. •Transmit a sensor light to an earlobe or finger tip, and measure the pulse count via the subtle changes of the sensor light transmission caused by the heart beat. Although the measurement principle and method are different, both the heart and pulse rates have the same value per minute, and are therefore regarded as synon