“uncanny valley”used in reference to the phenomenon whereby a computer-generated figure or humanoid robot bearing a near-identical resemblance to a human being arouses a sense of unease or revulsion in the person viewing it.

Concept developed in1970s
	roboticist Masahiro Moti
		*created a graph that plotted the emotional response of a human being to a robot against the increase in 		the perceived realism of a robot
		*graph showed a significant dip at the point where the robot's resemblance to a human is perceived to be 		almost exact.