system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is happening in your brain when you struggle to remember something and it finally comes to you?
gpt
The brain recalls things by first filtering out memories that it deems irrelevant, to try to narrow down the remembering process. Sometimes it accidentally filters out what you were trying to remember, so you can get really close but not quite remember that exact thing. After a while, when you focus on something else, the "filter" goes away / resets and if you try to remember it again the brain gets it right that time.