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…Continue readingActivin A, Follistatin May Be Key To Restore Damaged Sound-detecting Cells In The Ear
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,…Continue readingThree Subtypes Of Type I Spiral Ganglion Neurons Identified
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,…Continue readingEardrum Motion Synchronized With Direction And Amplitude Of Saccades
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…Continue readingPlace Based Pitch-sensitive Neurons: Perceptual Integration Evidence
A method to grow inner ear tissue from human stem cells has been developed by researchers at Indiana University School of Medicine. The work could lead to new platforms to model disease and new therapies for the treatment of hearing and balance disorders. Eri Hashino, PhD, Ruth C. Holton Professor…Continue readingInner Ear Tissue Grown From Human Stem Cells
Evolution likes to borrow. It can take an already-successful biological structure and alter it until it serves a new function. Two independent groups studying the proteins that organize gut microvilli now suspect that this may have been the case in the development of inner ear hair cell stereocilia. While functionally…Continue readingDid Ear Sensory Cell Stereocilia Evolve From Gut Microvilli?
Contrary to popular belief, you shouldn’t clean your ears with cotton swabs, as this could lead to hearing loss, damage or worst, said Ear, Nose and Throat Prof Dr Asma Abdullah of the National University of Malaysia. Dr Asma said there are some people who like sticking a cotton swab,…Continue readingWhy You Should Stop Cleaning Your Ear With Cotton Swabs