The brain works as a hierarchical distributed network of networks (hence heuristics).
We attach meaning and prototype of objects as abstract concept.
DNN was created to reconstruct images using fMRI.
But this is not the whole story, you have to know three additional things to make a connection.
Various networks or blending functions are individual on person basis. Everything starts from the first day of life.
We try our senses, here touch and vision. We see 3D, but to do that, we would require 3 eyes. So depth of image is also created in kind of brains distributed DNN using additional info, like shade or object recognition (cognitive function tells us that e.g. car has depth, so this part is purely cognitive).
The distribution of rods and cones is not uniform and not the same among people, but yet, we see the same things?
This is not entirely true, people who never seen buildings (experiment on native tribes) when go up, to the roof, they do not feel anxiety looking down.
People who never seem triangle are immune to optical illusion,
They see three bitten apples and pictogram of three birds.
Getting back, people who share knowledge, say starting from primary school, will see it.
The missing part: how people can see the same things with the different distribution of rodes and cones?
First, they see small differences, but are able to infer it. Second, crucial point, when we learn to use sight, we also use touch as training set. Being able to touch something and remember shape, calibrates perception. Based on other senses and continuous training (brain consolidates every new piece of information all the time), the distribution of sensors doesn't matter, as we check out the world and surroundings for something like first five years, and then start to infer and learn abstract ideas, with calibrated sight.
This is solely based on senses and experience.
This is the same as with neural network classifier that gets different modified versions of the same image, as far as it is used consistently the same convolution function, the results won't change much. People change this convolution function in the first years of life after touching enough objects and byproduct is depth sensing.