Inventor: Hans Berger

• Invented in 1928
• Led to the development of neurophysiology

The EEG made it possible to record electric currents in the brain without opening the skull and record them on paper. This new recording method was called an electroencephalocardiogram. Hans Berger discovered that the currents changed according to status of brain, such as anesthesia, sleep, and in certain nervous diseases. This caused a new branch of science, clinical neurophysiology. EEGs led to color brain mapping, enabling the location of epileptic foci- points of convulsion in the brain, including tumors and lesions. Brain mapping will continue to develop in the future, with the aid of computers, and can develop into a very powerful diagnostic medical tool.

Picture from Encarta Encyclopedia.

Sabbatini, Renato. "The History of the Electroencephalogram." Brain and Mind Magazine. August/September 1997. Available 11 April 2004. <http://www.epub.org.br/cm/n03/tecnologia/historia.htm>

• This site had some basic information on the EEG, including the discovery and the uses of the EEG.