Video explains how neurons and synapses shape learning and memory

The post introduces a knowledge video that explains learning at the neuron level, describing knowledge as circuits of connections between neurons rather than stored content.

It highlights how signals switch between electrical and chemical forms at synapses, how review strengthens connections and adds myelin, and how unused connections get pruned, citing the cat-stripe experiment.

It concludes the brain is not filled up but declines through disuse, drawn from Chapter 1, Section 2.1 of *Intrinsic-Drive Learning*.