Seonglae Cho건강에 가장 중요한 건 수면, 두번째는 식이이다. Diet
잠을 오게 하는 호르몬인 멜라토닌은 밤이 길어질수록 분비되는 시간이 길어진다
밤이 긴 겨울에는 멜라토닌이 아침 늦게까지 남아있어 늦잠을 자게 되는 것
Sleep Notion
Sleep Usages
Memory
During sleep, slow electrical waves push fluid from around cells deep in the brain to its surface, where it is absorbed into the bloodstream through a sophisticated interface. There is growing evidence that the brain's waste-removal system is impaired in Alzheimer's disease.
Dreams are not meaningless byproducts, but rather evolved to prevent Overfitting in the brain and aid generalization. Just as deep learning uses noise injection and Dropout to prevent overfitting, dreams provide the brain with distorted, sparse, and hallucinatory inputs: the sparsity, hallucination, and narrative that differ from reality are precisely the "intentional corruption" that favors generalization.
In other words, dreams expose the brain to high-entropy data that differs from existing data, preventing overfitting Model Collapse. This means the brain continuously generates its own Synthetic Dataset for self-training, thereby generalizing its performance
This explains the phenomenology of dreams (their strangeness) better than Memory Consolidation or emotional regulation theories. Sleep (especially dream) deprivation → memorization remains intact but ability to respond to new situations declines. Dreams contribute to performance recovery after repeated overtraining. Fiction like novels and films can also help generalization like "artificial dreams"