This document discusses the neurochemistry of learning and memory. It defines different types of learning and memory, and factors that affect them. Various neurotransmitters involved in learning and memory are described, including acetylcholine, dopamine, glutamate, and GABA. The document also outlines the process of learning and memory formation at the neuronal level. Common learning and memory disorders are mentioned, as well as methods to diagnose them and potential enhancers.