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The eyes have it

Fuseworks Media
Fuseworks Media

How do our eyes see in 3D, even when we’re looking at a flat screen? Why does the world appear still when we move our eyes? The mysteries of human vision have long been explored by University of Waikato vision scientist Professor John Perrone.

He’ll be talking about his discoveries at a public lecture on 2 July, the sixth in the University of Waikato Hamilton Public Lecture Series. His lecture is titled Why the world does not look flat to Cyclops or one-eyed pirates: The role of visual motion in human depth perception.

Professor Perrone is based in the School of Psychology at the university and his research fits within the general area of visual perception and visual neuroscience. He says knowing how humans and animals use vision to navigate through the world (self-motion) is an important topic within psychology and in the general field of neuroscience. It also has many important practical applications, for example in robotics, aerospace and driving research.

In his public lecture, Professor Perrone will explain how the eyes and brain work together to automatically enable us to judge our motion through the world and to see the position and distance of obstacles in front of us.

"With a single eye, humans can extract three-dimensional depth information about the environment in front of them from just the light projected onto the back of the eye," he says.

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