Prosthetic synaesthesia and cortical implants.

The human brain is a remarkably complex and flexible organ, with as many possible failure modes and glitches as there are emergent and surprising properties. Take something away, and sometimes you can coax another part of the brain to take up the slack in some other way. Case in point, artist Neil Harbisson. Harbisson was born with a condition called achromatopsia, which is the name for a group of disorders which collectively result in the same phenomenon - he cannot see colors, only shades of greyscale. Sometimes it's a neurological dysfunction, sometimes it's a defect in the retina, and sometimes it's …

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