Brainwave Machines

Austrian psychiatrist Hans Berger wanted to know if brain electricity can be recorded. In 1908, he invented a machine to record electric current (brainwaves). Berger’s initial device was not sophisticated, but it is because of him we have the first recording of brain waves. 1.) Electroencephalography (EEG) Machine: electro = electrical,  encephalon = head, and graph = drawing or picture. Electroencephalography depicts brainwave electricity.  EEG measures the frequency (speed) of electrical current oscillations (voltage fluctuations).  The brain waves are graphically shown and presented on a piece of paper. EEG  medical uses include diagnosing epilepsy, coma, and brain death, and 2.) Digital electroencephalogram is a more sophisticated EEG that measures higher level brain activity. With digital it is possible to pick up gamma waves (more to come).