[PDF] Plato’s camera: how the physical brain captures a landscape of abstract universals Churchland, Paul M

First-level learning, Part 1: Structural changes in the brain and the development of lasting conceptual frameworks — First-level learning, Part 2: On the evaluation of maps and their generation by Hebbian learning — Second-level learning: Dynamical changes in the brain and domain-shifted redeployment of existing concepts — Third-level learning: The regulation and amplification of first- and second-level learning through a growing network of cultural institutions.