Illusions
The Brain
How it works
Fun Facts
100
This illusion makes a square look lighter or darker because of its shadow?
What is The Checker Shadow Illusion
100
These cells in your eye are responsible for seeing light and colour?
What are Rod and cone cells
100
This kind of mirror is thicker in the center
What is a convex mirror
100
This animal is known for using camouflage as a natural optical illusion?
what is a chameleon?
200
This illusion makes a spiral look like it's moving
What is a motion aftereffect (or spiral illusion)
200
This is a part of the eye which has no photo sensitive cells and is where the optic nerve connects to the retina
What is the blind spot of the eye
200
This is what causes you to see an afterimage
What is an overstimulation of photoreceptor cells, such as staring at a bright image?
200
This is what happens to pupils in the dark
What is they dilate (get larger)
300
This is why a straw looks bent when you put it in water
What is because light bends (refraction) due to a change in medium
300
This part of the brain is responsible for processing visual stimuli
What is the visual cortex
300
This is why things look blurry underwater without swim goggles?
What is because the cornea is unable to bend light as well because water has a similar refractive index
300
What percent of the brain is actively used at any given time?
What is 100%! The 10% myth is actually false!
400
This arrow (not including arrowhead) is bigger than the other (muller-lyer illusion)
What is they're both the same
400
These lobes of the brain is the primary lobe for visual processing
What is the occipital lobe
400
This is what causes the motion aftereffect, seen in the waterfall illusion
What is fatigue of motor-sensitive neurons
400
This dress was hotly debated online as either ___ and ___, or ___ and ____
What is blue and black or white and gold
500
This is why parallel lines seem to bend in the below cafe wall illusion
What is because the small black-and-white tiles create a contrast effect
500
This is the orientation in which our brain originally 'sees' images
What is Upside down
500
This is how 3D glasses add a layer of depth to a 2D movie.
What is by creating slightly different images for either, so that the brain has to combine the two, creating depth.
500
This is why goats have rectangular pupils?
What is to give them a larger range of vision to spot predators