Based on the provided text, the process that normally helps strengthen and preserve memories is memory replay.
HereS a breakdown of how it works, according to the text:
* What it is: When we rest, our brains replay recent experiences.
* Where it happens: Primarily in the hippocampus.
* How it works: Specific neurons called “place cells” activate in rapid sequences that mirror recent experiences.These cells fire in a specific order as we move through a space, and then reactivate in the same sequence during rest.
* Why it’s important: This replay process is thought to be key to how memories are formed and maintained, strengthening memory signals.
The study found that in mice with Alzheimer’s-like plaques, this replay process is disrupted – the patterns become scrambled and place cells become less stable – leading to impaired memory.
Worth a look