A portable EEG (electroencephalograph) instrument, especially for use in emergencies and brain assessments in physicians' offices, detects and amplifies brain waves and converts them into digital data for analysis by comparison with data from normal groups. In one embodiment, the EEG electrodes are in...http://www.google.de/patents/US6052619?utm_source=gb-gplus-sharePatent US6052619 - Brain function scan system
