Neuroscientists have studied the brain's reality-creation processes using images of optical illusions.
Originating from the Latin illudere, meaning to taunt or deceive, the English word illusion is a product of this verb.
In addition to being one of the easiest ways to gauge a person's IQ and focus, optical illusion visuals are intentionally misleading.
Readers are challenged to identify that peculiar house emoji within a 5-second time limit.
In the picture up above, you can see a grid of house emojis.
Put your powers of observation to the test with this challenge.
Those readers with exceptional vision may have been the first to notice the strange emoji.