Optical Illusions - Motion binding & Colour constancy

In this video we’ll be taking another look at a 2 more optical illusions. I got the ideas for these illusions from Michael Bach’s website, so I’ll put a link to that below. Let’s find out more.

The first optical illusion is an example of motion binding. In this first illusion, we can see 4 coloured lines on a grey background. We can see that the 4 lines appear to be moving around. As we look for a little bit longer, we can more clearly see that the lines appear to be organised into 2 pairs of parallel lines. The 2 pairs of lines seem to be moving independently of each other, but the lines in a pair appear to be moving in tandem. As one line moves upwards, so does the other line that makes up the pair.

The second illusion is an example of colour constancy. The face is black and white, but there is a red overlay half way across the photo. This has the effect of making the eye on the red side of the face look blue. Let’s find out why that is.

Link to the illusions on Michael Bach’s website
Motion binding
Colour constancy

[chrisframpton]

That square illusion seriously just blew my mind 🤯 I kept trying to go back and forth before the camera panned down, but couldn’t keep the square in my mind. WTF?!?!?

[spundefiant]

2:30 I can switch between seeing the square moving and two 'pistons' moving over each other between the pink squares. I even dimly see a cylindrical gradient on these 'pistons', brighter in the center (length ways) and darker at the edges.

[doggonemess]

I don't see the slightly blue eye. It's always grey for me, even when I resize the image or move it to my other monitor.

[BarbaSimon]

When I'm on the road, in the distance, I can actually make out what seems to be puddles of water, but as I get closer to them, they disappear.

[TheandOnlyWog]

The movement stayed disjointed for me until the corners were revealed. Is that bad? Like, does it indicate that something is wrong, or that I am just weird? Lol!

[jerryy]

neither of the illusions worked for me :o

[markxxx]

The second illusion doesn't work for me either. I see the same thing.