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Because the brain process sound in two different ways, it will block out sounds that are unimportant and allow you to react to sounds that are. Here's a link that I found while asking the same question;
This is the passage from www.sciencedaily.com:
Using electrodes implanted directly on the human cortex, a Johns Hopkins University undergraduate has located the part of the brain that appears to process sounds while people sleep. This site, in the frontal lobe, may be part of a vigilance system that, for instance, rouses a mother when her baby cries but lets the woman sleep when a truck rumbles by.
http://www.sciencedaily.com/releases/1998/04/980430044534.htm
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What noise do you make in your sleep that is 5 letters?
bum
Is noise good for you?
White noise, in the form of a sound machine, helps many people sleep - by blocking out surrounding noise (in other rooms or apartments, or traffic noise).
Is white noise good for you?
White noise, in the form of a sound machine, helps many people sleep - by blocking out surrounding noise (in other rooms or apartments, or traffic noise).
What do people make that you can't see?
noise
Name something that dogs are always able to do that people can only do on a camping trip?
pee outside, sleep anywhere, catch food, make lots of noise
Do quinea pigs sleep?
i think they do. my guinea pigs make noise when im sleeping but sometimes they dont so yes they do sleep
Why are valley's so peaceful?
Becouse there is nobody alive to make noise & dead people cant make noise
How do you make people pee in their sleep?
Make them drink a lot of liquid before they sleep.
How many things can a bottle nose dolphin do while swimming?
it can sleep play eat make a funny clicking noise
Why aircraft does not make noise in night?
Aircraft make noise any time they fly. They make less noise at night because airports have published "noise abatement" procedures pilots follow to keep the people who live around airports happy.
What is the difference between a sleepover and a slumber party?
A slumber party is usually for a bunch of people and there is more noise and stuff and a sleep over is for one person to sleep at someone's house
What would most people find hard to do when there is loud noise?
for family fued: read, have a conversation, concentrait, sleep, study
