sentences:  In the 1830s Michael Faraday (1791-1867) discovered that an electrical current had a corresponding magnetic field, and that changing one could induce its counterpart.Work to directly stimulate the human brain with electricity started in the late 1800s, and by the 1930s the Italian physicians Cerletti and Bini had developed electroconvulsive therapy (ECT).ECT became widely used to treat mental illness, and ultimately overused, as it began to be seen as a panacea.