An illusion is when we see and perceive an object that doesn't match the sensory input that reaches our eyes. In the case of the image below, the sensory input is four Pac Man–like black figures.

Neuroscientists are zeroing in on how special kinds of brain cells help us see things that aren't actually there.

Titanio series stepper drives from Ever Motion Solutions include three new drives available with two open-loop (no encoder ...