Semantic memory is a form of long-term memory that comprises a person’s knowledge about the world. Along with episodic memory, it is considered a kind of explicit memory, because a person is ...

While some decline in the ability to remember is a normal part of aging, for a subset of people, growing older brings the onset of neurodegenerative conditions such as Alzheimer’s disease. In such ...

SCHENECTADY, N.Y.: What kinds of memory lapses are part of normal aging, and which are cause for concern? Aaron Philip Nelson, Ph.D.: All of our bodily systems acquire some "wear and tear" as part of ...