Science & Nature

Very tiny neurons.

Scientists have solved a classic optical illusion–and the answer’s in your neurons

Source: BBC: Science Focus

There is a famous optical illusion with two gray lines inside a number of black and white bars. The gray bars are the same color, but they appear lighter or darker depending on which bars are around them. Science was never sure why, but it seems the answer lies in you brain’s neurons and how fast they can fire.