When you can recite a poem but not remember who asked you to learn it a few days earlier

When you can recite a poem but not remember who asked you to learn it a few days earlier: "Memory is not a single process but is made up of several sub-processes relying on different areas of the brain. Episodic memory, the ability to remember specific events such as what you did yesterday, is known to be vulnerable to brain damage involving the hippocampus. The question is, what happens when damage to the hippocampus occurs very early in life? Clinical neuropsychologists have now reported that a child can develop normally despite severe damage to the hippocampus resulting from lack of oxygen in the first days of life. This supports the theory that the different aspects of memory rely on distinct areas of the brain."