49.0 MB (2.3 MB compressed)
4969 x 3445 pixels
42.2 x 29.2 cm ⏐ 16.6 x 11.5 in (300dpi)
HANK MORGAN / SCIENCE PHOTO LIBRARY HANK MORGAN / SCIENCE PHOTO LIBRARY
Brain-activated technology. Researchers using brain activity to control a cursor on a computer screen. The subject, trained using biofeedback techniques, is able to alter the pattern of various brain waves. The patterns, a combination of electroencephalogram (EEG) and electromyogram (EMG) signals, are detected by electrodes on the subject's head, and are interpreted by a computer as simple commands such as 'move left' or 'move down'. The subject is then able to negotiate the cursor through a maze on the screen. Photographed at Brain Actuated Technologies Inc, Ohio, USA.
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