Liza explains that our brain processes information from our senses and makes conclusions (perceptions) about our environment. When these perceptions are wrong, this is an illusion. They show a few examples of an optical illusion.

Temple, an autistic student, watches a short film on optical illusions and is immediately intrigued by it. She sets out to achieve the effects in the movie and does so after much persistence.

Chris and Martin find out the hidden power of zebra stripes.

Beakman explains how the brain uses perception to gather visual and auditory cues and puts together what likely happened. This is used in filmmaking to make things look like they are really happening. Beakman explains how stunts are done by tricking the viewer's perception of what happened.

How does the eye work exactly? In the latest video from Decoder, learn some of the extraordinary science behind how your eyes and brain work together to perceive the world around you.