[smokel]

Artists are still struggling with the fact that human perception arises from binocular vision. Two distinct retinal inputs are integrated by distributed neural processes into a single, coherent 3D experience. This integration is neither a simple planar stitching nor a direct representation of the world, but an active construction shaped by neural computation and subjective awareness.

It is quite likely that artists in earlier periods struggled with this as well, and were less concerned with adhering strictly to a photographic or geometrically exact perspective, as we are. The adoption of the camera obscura probably influenced things a lot.

[fenwick67]

Even ignoring binocular vision it's very unintuitive to "draw what you see" because of this. Our brain usually interprets our environment as objects, 3d shapes, and things. Turning that off and trying to grab a literal image from it is difficult

[Demiurge]

Is “neural computation” a thing, or a poetic metaphor?

[smokel]

It's a thing [1].

[1] https://en.wikipedia.org/wiki/Neural_computation