Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Electroconvulsive therapy is a medical procedure in which electric currents are used for therapeutic effect by passing them through the brain, deliberately triggering a brief seizure, thus causing changes in brain chemistry that can reverse symptoms of certain mental diseases. Mostly recommended to treat depression, mania and catatonia, the shock therapy continues to be subjected to new researches, in order to better understand its mechanism of action. Recently, after more than 70 years of using electroconvulsive therapy, scientists announced to have discovered how it works. To find out more about electroconvulsive therapy, treatment efficacy and adverse effects – read this book.