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Dr. Randall Bly, an assistant professor of otolaryngology at the UW School of Medicine who practices at Seattle Children’s Hospital, uses the app to check his daughter’s ear.Dennis Wise/University of Washington

Researchers developed a smartphone app that can hear ear infection in children

An ear infection may occur when fluid builds up in the middle ear behind the eardrum and is infected. Any kind of fluid build-up...
This image, taken through an optical microscope, shows a cross-section of the tectorial membrane, a gelatinous structure that lies atop the tiny hairs that line the inner ear. Photo by Jonathan Sellon, MIT micromechanics group

Mechanism helps explain the ear’s exquisite sensitivity

The human ear, similar to those of different mammals, is so uncommonly delicate that it can detect sound-wave-induced vibrations of the eardrum that move...