Engram (noun)

A hypothetical physical change in the brain that is assumed to represent a memory.

Origin:

The word "engram" was coined by psychiatrist richard semon in 1904, it comes from the greek word "en" meaning "within" and "gramma" meaning "something written" and it refers to a hypothetical physical change in the brain that represents a memory.

Examples:

1. The engrams formed in the hippocampus are thought to play a key role in memory formation.
2. The study of engrams is an active area of research in neuroscience.
3. Some scientists believe that memories are stored as engrams in the brain.
4. He had a photographic memory and could recall events in great detail, suggesting that his engrams were well formed.
5. The idea of engrams as a physical basis for memory has been challenged by other theories.