Source: wamu.org | Repost Duerson Fund 11/8/2021 –
Headaches, nausea, dizziness, and confusion are among the most common symptoms of a concussion. But researchers say a blow to the head can also make it hard to understand speech in a noisy room.
“Making sense of sound is one of the hardest jobs that we ask our brains to do,” says Nina Kraus, a professor of neurobiology at Northwestern University. “So you can imagine that a concussion, getting hit in the head, really does disrupt sound processing.”
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From ear to brain
Our perception of sound starts with nerve cells in the inner ear that transform pressure waves into electrical signals, Kraus says. But it takes a lot of brain power to transform those signals into the auditory world we perceive.