So what does perception even mean? What's the difference between seeing something and making sense of it? In today's episode of Crash Course Psychology, Hank gives us some insight into the differences between sensing and...

We have done a test to see what happens if we try putting a pencil through the hole in a nut while one eye is closed. As it happens, it could be a challenge because we are losing a sense of how far away the pencil is.

3D movies and TV are is increasing in popularity, but is any of it truly 3D? How true is the 3D in movie theaters? How do glassess-less 3D TVs work? Try catching a ball with one eye closed. If you find it easy, try having the ball thrown...

In late August, the OSIRIS-REx spacecraft will navigate to asteroid Bennu’s surface for its first sample collection attempt. To do this, it will use an onboard image software known as Natural...

Laurie Humphrey gives a ranger program to Shark Valley visitors about the Florida Panther (17:11 minutes).

Using animated diagrams and real world situations, this video will show students how our eyes use light to see the world, how radar uses radio wave reflections to determine the position of objects and how echolocation works to determine...

In this video, the concept of depth perception is explained, highlighting the different cues that our brains use to perceive the distance and three-dimensional nature of objects. The video discusses both binocular cues, which require...

This video explains how the brain processes visual information and what happens to the visual areas of the brain when someone is blind. It also explores neuroplasticity and how the brain can reorganize itself in response to blindness,...

We make a lot of assumptions about the things we see without even thinking about it. We fill in visual gaps based on information from past experiences. This is called unconscious inference. Learn how and why we do this.

Perspective illusion allows us to see two dimensional images as three dimensional. Learn how the human brain's interpretation and perception of patterns fills in the gap of these images to allow us to see depth when it is not actually...