The idea appeared first in the year 1899, by the British J.A. McWilliam when he discovered that an electrical impulse can affect the heart by controlling the ventricular contractions reaching 60 or 70 beat/minute.
In the year 1926, Dr. Mark Lidwell (1878-1969) The Australian doctor, along with Edgar Booth The Australian physicist, invented a device that could control the heart beat through using a light source. The device was used to help a new born baby.
In the year 1932, Albert Hyman