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Activin A, Follistatin May Be Key To Restore Damaged Sound-detecting Cells In The Ear

Using genetic tools in mice, researchers at Johns Hopkins Medicine say they have identified a pair of proteins that precisely control when sound-detecting cells, known as hair cells, are born in the mammalian inner ear. The proteins may hold a key to future therapies to restore hearing in people with irreversible deafness. “Scientists in our […]

Three Subtypes Of Type I Spiral Ganglion Neurons Identified

Type I spiral ganglion neurons, the class of neurons responsible for transmitting information from the inner ear to the brain is composed of three molecularly distinct subtypes, a new study by Harvard Medical School researchers shows. One of these subtypes is selectively lost in the inner ears of aging mice, and this molecular diversity does […]

Eardrum Motion Synchronized With Direction And Amplitude Of Saccades

Moving the eyes triggers the eardrums to move as well, a new study by Duke University neuroscientists has found. The researchers discovered that keeping the head still but shifting the eyes to one side or the other sparks vibrations in the eardrums, even in the absence of any sounds. Surprisingly, these eardrum vibrations start slightly […]

Place Based Pitch-sensitive Neurons: Perceptual Integration Evidence

For decades, scientists have debated how, exactly, humans perceive pitch, and how the ear and the brain transmit pitch information in a sound. There are two prevalent theories: place and time. The “time code” theory argues that pitch is a matter of auditory nerve fiber firing rate, while the “place code” theory focuses on where […]