- By Tina Hesman Saey, Science News
March 10, 2010 | - 9:32 pm |
- Categories: Health
Some folks who don’t seem to listen may just have a lazy ear.
A new study in rats shows that short-term hearing impairments at any
stage of life can lead to rewiring in the part of the brain that
processes sounds, making the ear seem as if it is loafing on its duty
to make sense from noise.
Ear infections and fluid buildup in the middle ear — a condition
known as otitis media with effusion — can dampen incoming sound
waves. These problems are extremely common in children and represent
the top reason children go to the doctor. Such temporary hearing
impairment can lead to lingering hearing deficits even after the
infection or fluid clears up. The long-term difficulties result from a
problem with how the brain adjusts to hearing changes rather than a
malfunction in the ear’s ability to detect sounds, researchers
report in the March 11 Neuron.



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