The study of the generation and behavior of electrical charges in living organisms particularly the nervous system and the effects of electricity on living organisms.
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Transducers
Any device or element which converts an input signal into an output signal of a different form. Examples include the microphone, phonographic pickup, loudspeaker, barometer, photoelectric cell, automobile horn, doorbell, and underwater sound transducer. (McGraw Hill Dictionary of Scientific and Technical Terms, 4th ed)