Incredible optical illusion demonstrates that when objects are removed from peripheral vision, the brain perceives a slower pace of motion 📹 Akiyoshi Kitaoka

The optical illusion you are referring to is called the "highphi" effect. It was first described in a study published in the journal Proceedings of the National Academy of Sciences in 2012. The study found that when people watch a rotating annulus (a ring-shaped object) with some of the line segments removed, they perceive the annulus to be rotating more slowly than when all of the line segments are present. The researchers believe that this is because the brain uses the line segments to track the motion of the annulus. When some of the line segments are removed, the brain has less information to work with, and so it perceives the motion to be slower. The highphi effect is just one example of how our brains can be tricked by optical illusions. There are many other optical illusions that demonstrate how our brains can misinterpret visual information. These illusions can be fascinating and entertaining, but they also help us to better understand how our brains work.

does this qualify as an illusion? we're simply removing the reference frame. less parallax reduces the ability to determine our relative speed.

In 1898 Nikola Tesla once tricked an entire crowd into believing they could control a toy boat by shouting commands - he had in fact invented Radio Control and was piloting the boat himself.

I wonder if this explains being “in the zone” in sports.

It’s like a natural way of activating slow motion! Very much unbelievable but as much true it is! Things are always different when we see from different angles and different perspectives. The way we see matters the most.

I’ll use this the next time I need to dodge a bullet

About the brain 🧠 perceiving surroundings: Your nose is visible to you at all times. Your brain just cancels it out so that you can see better. Close one eye and look towards the middle. Did you notice? 😇

Applies here - Objects in the mirror are closer than they appear!! 💯✅

In this video, the focal length is increased, which is not the same as removing objects from the peripheral vision. You could remove the parts of the train without a change of focal length and I am pretty sure that the effect would be different.

colloquially known as: The power of focus