Your Brain Listens for Unfamiliar Sounds While You Sleep
It seems your brain is always working, even when you are asleep!
According to a new study, your mind continues to monitor your environment. It, essentially, balances both your need to sleep, and your need to possibly wake up, at the same time. It’s a survival mechanism.
One example is in the voices which surround you: When you hear a familiar voice, your brain triggers a small reaction; but when an unfamiliar voice is heard, the brain wave associated with sensory disturbances becomes larger. It’s kind of like a “hey, wake up, something’s different.”
It’s nice to know you can count on your brain to protect you, even when you’re catching some Z’s.