Optical illusions play tricks on your brain and can make you see ... which receive and transmit information coming into the eye. Ganglion cells are excited by light, and the intersections of ...

Of course, the part of the video that shows the pencil moving underneath the cube is down to clever editing (no-one's drawing ...

the human eye must work overtime to differentiate the cube from the circular candies. It’s a true test of patience and concentration! So, what is it about optical illusions that make them so ...