4 ms·

It's interesting how the distortions are confined to the narrow triangle that is the face. The remainder of the head is undistorted. From my experience with por

by Daub 3y ago

It's interesting how the distortions are confined to the narrow triangle that is the face. The remainder of the head is undistorted. From my experience with portrait painting I can say that the quality of our responce to this region is many times more acute than any other part of the body. My vision is very poor, but even with my diminished vision I can tell if a student at the back of a lecture hall is looking at me or over my shoulder. Not a neurologist, but I’m going to guess that this is because the face is processed by a dedicated perceptual apparatus.

kzrdude 3y ago
As an aspect of that, the perception we get of a face is very much a "cooked" or processed representation of and not an exact picture of the face as it is. The thatcher effect and other similar effects are evidence of that.
- Daub 3y ago
  So… does this imply that our perception is template-driven?
  - etrautmann 3y ago
    Perception is highly influenced by top down information as the brain models what it expects to see. It’s complex, but attention learned representations of the world have an enormous influence on perception.
    - pixl97 3y ago
      Perception Deception: Nova https://www.youtube.com/watch?v=HU6LfXNeQM4 https://www.youtube.com/watch?v=HU6LfXNeQM4 Your Brain - Who's in control: Nova https://www.youtube.com/watch?v=yQ6VOOd73MA https://www.youtube.com/watch?v=yQ6VOOd73MA Both of these videos are great resources on how much of what you experience of reality is made up or filled in by your brain at any given moment. I believe it's the Perception Deception episode that shows us how little of our vision is actual HD quality and that an external observer doing eye tracking on you can present a different reality to you than a 3rd party looking at the same object you are (on a screen at least, little bit harder in the real world).
      - jamiek88 3y ago
        Which leads to foveated rendering which is nearly perfect on my Apple Vision Pro but if you quickly move your eyes up and down and side to side eventually the sensors lag and you see the blurriness. It’s a very clever use of our vision processing that you only need to render in full 4K what our very narrow foveated view can see. As long as your eye tracking and lag is lower than around 12ms ish.
    - GolfPopper 3y ago
      As someone who reads a great deal (both print and screen), many times I've glimpsed part of a written word, or even something that looks like a written word, and my brain has automatically generated a complete (and wrong) word. I catch it when a moment later I think "why would that word be there" and either I'll double-check and the word will turn back into whatever text fragment or letter-looking thing, or more rarely my memory of the pseudo-word will change.
    - Daub 3y ago
      Nicely expressed. Thank you.
yodon 3y ago
The corneal bump on the front of the eye plays a major role in the accuracy with which we can determine whether someone is looking at our face, hands, body, etc., even from a considerable distance. The shape of your eye isn't a sphere, and our brains make great use of how that changes the shape and highlights of the eye based on orientation.
- Bjartr 3y ago
  > The shape of your eye isn't a sphere, and our brains make great use of how that changes the shape and highlights of the eye based on orientation. Where can I learn more about this? Googling just pulls up medical cases of bumps on the eye.
  - yodon 3y ago
    Perhaps see [0] or some of the references it contains [0]https://cgl.ethz.ch/Downloads/Publications/Dissertations/Ber18.pdf https://cgl.ethz.ch/Downloads/Publications/Dissertations/Ber...
Turing_Machine 3y ago
Humans are optimized for faces in much the same way that dogs are optimized for scent. So much so that we even see faces when there aren't any (in rocks, water stains, pieces of toast...)

by Daub 3y ago

kzrdude 3y ago

As an aspect of that, the perception we get of a face is very much a "cooked" or processed representation of and not an exact picture of the face as it is. The thatcher effect and other similar effects are evidence of that.

Daub 3y ago
So… does this imply that our perception is template-driven?
- etrautmann 3y ago
  Perception is highly influenced by top down information as the brain models what it expects to see. It’s complex, but attention learned representations of the world have an enormous influence on perception.
  - pixl97 3y ago
    Perception Deception: Nova https://www.youtube.com/watch?v=HU6LfXNeQM4 https://www.youtube.com/watch?v=HU6LfXNeQM4 Your Brain - Who's in control: Nova https://www.youtube.com/watch?v=yQ6VOOd73MA https://www.youtube.com/watch?v=yQ6VOOd73MA Both of these videos are great resources on how much of what you experience of reality is made up or filled in by your brain at any given moment. I believe it's the Perception Deception episode that shows us how little of our vision is actual HD quality and that an external observer doing eye tracking on you can present a different reality to you than a 3rd party looking at the same object you are (on a screen at least, little bit harder in the real world).
    - jamiek88 3y ago
      Which leads to foveated rendering which is nearly perfect on my Apple Vision Pro but if you quickly move your eyes up and down and side to side eventually the sensors lag and you see the blurriness. It’s a very clever use of our vision processing that you only need to render in full 4K what our very narrow foveated view can see. As long as your eye tracking and lag is lower than around 12ms ish.
  - GolfPopper 3y ago
    As someone who reads a great deal (both print and screen), many times I've glimpsed part of a written word, or even something that looks like a written word, and my brain has automatically generated a complete (and wrong) word. I catch it when a moment later I think "why would that word be there" and either I'll double-check and the word will turn back into whatever text fragment or letter-looking thing, or more rarely my memory of the pseudo-word will change.
  - Daub 3y ago
    Nicely expressed. Thank you.

yodon 3y ago

The corneal bump on the front of the eye plays a major role in the accuracy with which we can determine whether someone is looking at our face, hands, body, etc., even from a considerable distance. The shape of your eye isn't a sphere, and our brains make great use of how that changes the shape and highlights of the eye based on orientation.

Bjartr 3y ago
> The shape of your eye isn't a sphere, and our brains make great use of how that changes the shape and highlights of the eye based on orientation. Where can I learn more about this? Googling just pulls up medical cases of bumps on the eye.
- yodon 3y ago
  Perhaps see [0] or some of the references it contains [0]https://cgl.ethz.ch/Downloads/Publications/Dissertations/Ber18.pdf https://cgl.ethz.ch/Downloads/Publications/Dissertations/Ber...

Turing_Machine 3y ago

Humans are optimized for faces in much the same way that dogs are optimized for scent. So much so that we even see faces when there aren't any (in rocks, water stains, pieces of toast...)