Stelarc

Stelarc's early works were mostly focused on suspensions, where he'd have hooks go into his skin and it would suspend him, however his later works are centered more around technology as seen in the picture above. His idea was that we as humans can better ourselves and evolve with the use of technology. 

Much of it also seems revolved around him basically doing stuff to himself, modifying his body or cutting into himself to "improve" upon himself. In this case he puts something inside his arm to make it look like he has an ear there.