Why does alcohol have such an effect on our hearing that it causes us to speak louder, even shout?
In an article on Abc.net.au Dr Karl attempts to explain why.
According to the doctor, a few drinks impairs your sense of hearing, so when you speak, you mistakenly think you are speaking softer than usual. To compensate, you think you’re speaking louder.
Scientists aren’t exactly sure how alcohol affect your hearing, but we do know that sound information is carried from your eardrum to the central processing centres inside your brain. As alcohol affects the brain, it has a chain reaction, affecting everything controlled by the brain, including hearing.
Read more at http://www.abc.net.au/science/articles/2016/04/26/4448817.htm