Thursday 30 May 2019

Optical illusions reveal that regular waves of brain activity enable visual feature integration

Optical illusions reveal that regular waves of brain activity enable visual feature integration

Rhythmic waves of brain activity cause people to see or not see complex images that flash before our eyes. An image can become practically invisible if it flashes before our eyes at the same time as a low point of those brain waves. We can reset that brain wave rhythm with a simple voluntary action, like choosing to push a button.

The new results come from experts who use optical illusions to understand human vision. Human sight involves activity both in the eyes and in the brain. Optical illusions are formed by playing tricks on any part of our complex visual system.

"This is the first record of rhythmic brain activity used to achieve integrated visual perception," said Associate Professor Isamu Motoyoshi from the University of Tokyo and co-author of the recent research article.

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