Memory as a Biological and Cognitive System

This lesson introduces memory as both a biological process and a cognitive system. Students learn why memory is not a single mental storage box, but a coordinated set of brain and mind processes that encode information, stabilize it, retrieve it, revise it, and sometimes lose it.

The lesson frames the course by distinguishing major memory functions, including working memory, episodic memory, semantic memory, procedural memory, and emotional memory. It also explains why memory is adaptive rather than perfectly accurate: the brain prioritizes usefulness, meaning, prediction, and action over literal recording.