# How memories are stored

- kind: problem
- status: partial
- year: 1904

**Statement.** Where and how is a specific memory physically stored in the brain?

Synaptic plasticity is the accepted mechanism, and since 2012 'engram' cells have been tagged and reactivated in mice to trigger specific memories. How memories persist for decades while synaptic proteins turn over in days is not understood.

## Sources

- [Wikipedia: Engram (neuropsychology)](https://en.wikipedia.org/wiki/Engram_(neuropsychology))

[The brain](/wiki/Space:neuroscience.md) · [Mind](/wiki/Continent:mind.md)

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