What is the psychology behind forgetting something? How does the brain suddenly remember something you hadn’t thought about in years?

Question

What is the psychology behind forgetting something? How does the brain suddenly remember something you hadn’t thought about in years?

In: Biology

Answer 1

I was told it’s like a trail in the woods. If it’s used or thought of often the trail is there and easy to see or remember. If you don’t use it often the train becomes hard to see