Artificial Vision for the Blind: Electrical Stimulation of Visual Cortex Offers Hope for a Functional Prosthesis
- 1 February 1974
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 183 (4123) , 440-444
- https://doi.org/10.1126/science.183.4123.440
Abstract
Electrical stimulation of the occipital cortex resulted in discrete photic sensations or "phosphenes" in two volunteers who had been totally blind for 7 and 28 years, respectively. Stimulation of multiple electrodes allowed one patient to recognize simple patterns, including letters. Both patients made an uneventful recovery, and the success of these experiments reinforces the hope that a functional visual prosthesis can be developed, although many problems remain to be solved.Keywords
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