This brain-implanted hardware could be the next step in rest
When the Argus retinal prosthesis was first implanted into patients, it made headlines for bringing back elements of vision to those that had lost their sight. Now the system is giving medical professionals a fascinating insight into the plasticity of the human brain, with users learning to integrate computer-generated images with their everyday vision.

The Argus II, made by California-based Second Sight, works by gathering imagery from a camera built into a pair of glasses worn by the patient. The information is passed to an electrode array implanted into the patient's retina, at rear of the eye.

The electrical signals from the array are then sent down the optic nerve, allowing the patient to effectively 'see' a computer-generated visual representation of the world around them.

http://www.zdnet.com/article/this-brain-implanted-hardware-could-be-the-next-step-in-restoring-lost-sight/
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