A humanoid robot called Alter with electronic sensors was designed by scientists and engineers at Osaka University and the University of Tokyo. The sensors can detect sound, temperature, humidity and proximity, giving the robot feedback on how to 'behave' and mimic the workings of the human neural system. To the robot, these sensors are what skin is to humans. 

Alter can control its limb movements and facial expressions without any human telling it what to do or how to do it. It is capable of moving its head, eyes, mouth, body and hands, using its own 'neural network', 'powered' by 42 pneumatic actuators and a so-called central pattern generator or CPG.  It can even sing. 

To see the robot move, check out the video below, curtesy of The Japan Times.