What causes the ‘uncanny valley’? How does it work?

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How can humans tell that something is ‘off’ when presented with a CGI image that is very close to looking like the real thing? More specifically, why does this effect occur in things like CGI dragons or monsters or [that Sonic](https://pixel.nymag.com/imgs/daily/vulture/2019/05/01/01-sonic-the-hedgehog.w600.h315.2x.jpg), which are obviously not real to start off with?

And why does the ‘uncanny valley’ effect not occur in inanimate objects (for instance, I have never heard of anyone being creeped out by a CGI donut)?

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5 Answers

Anonymous 0 Comments

Your brain is fine when it can tells something is human or not but when it appears to be the in between it gets confused and scared.
I will give and example:
When looking to a mannequin your brain recognized that the size is about right for a human and the volume and shape is also ok but it has no facial features your brain thinks
“Ok, this is a bit human but I can’t find the face to know for sure if its 🙂 or 😐 or >:( so I am not sure if I should signal that am in danger or not, let’s try both”
So getting the creeps looking at something is your body trying to warn you to that it is ok and it’s not fucking ok at the same time.

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