neocortex

While “offline,” the brain is actively at work, storing and integrating knowledge in the neocortex.

Gradually, the knowledge of heart anatomy is stored long-term, which involves another brain area known as the neocortex.

All of that seems to be instantiated by the most excitable piece of active matter in the known universe, the neocortex.

Normally when you go to sleep, memories like these are consolidated and slotted into long-term storage in your brain’s neocortex.

That really seems to be in us the outmost layer of the brain, which is the neocortex, and that's the physical substrate of our conscious experience of the world, including notions of self.