Hair cell
hideHair cells are the sensory receptors of both the auditory system and the vestibular system in all vertebrates. In mammals, the auditory hair cells are located within the organ of Corti on a thin basilar membrane in the cochlea of the inner ear. They derive their name from the tufts of stereocilia that protrude from the apical surface of the cell, a structure known as the hair bundle, into the scala media, a fluid-filled tube within the cochlea. Mammalian cochlear hair cells come in two anatomically and functionally distinct types: the outer and inner hair cells. Damage to these hair cells results in decreased hearing sensitivity, i.e. sensorineural hearing loss.
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News tagged with hair cells
Now hear this: Mouse study sheds light on hearing loss in older adults
Nov 09, 2009 |
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(PhysOrg.com) -- Becoming "hard of hearing" is a standard but unfortunate part of aging: A syndrome called age-related hearing loss affects about 40 percent of people over 65 in the United States, and will afflict an estimated ...
Now hear this: Scientists show how tiny cells deliver big sound
Oct 22, 2009 |
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Deep in the ear, 95 percent of the cells that shuttle sound to the brain are big, boisterous neurons that, to date, have explained most of what scientists know about how hearing works. Whether a rare, whisper-small second ...
No longer a gray area: Our hair bleaches itself as we grow older
Biology /
Feb 23, 2009 |
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Wash away your gray? Maybe. A team of European scientists have finally solved a mystery that has perplexed humans throughout the ages: why we turn gray. Despite the notion that gray hair is a sign of wisdom, these researchers ...
Power steering for your hearing: Ears have tiny 'flexoelectric' motors to amplify sound
Apr 22, 2009 |
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Utah and Texas researchers have learned how quiet sounds are magnified by bundles of tiny, hair-like tubes atop "hair cells" in the ear: when the tubes dance back and forth, they act as "flexoelectric motors" ...
Fish Sense Other Fish Via Ripples
Oct 15, 2009 |
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Although humans experience their world through vision, touch and the other senses, many creatures gather information about their surroundings through unique sensory mechanisms that humans don’t have.
Ion channel turns ear on its head
Medicine & Health / Neuroscience
Apr 23, 2009 |
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Scientists thought they had a good model to explain how the inner ear translates vibrations in the air into sounds heard by the brain. Now, based on new research from the Stanford University School of Medicine, it looks like ...
New insights into progressive hearing loss
Apr 12, 2009 |
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In parallel studies in human and mouse, two groups of researchers have come to the same conclusion: that a new kind of gene is associated with progressive hearing loss. The new gene - called a microRNA - is a tiny fragment ...
Link between light touch and Merkel cells solves 100-year mystery
Jun 18, 2009 |
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Light touch - the sense that lets musicians find the right notes on a keyboard, a seamstress revel in the feel of cool silk, the artisan feel a curve in material and the blind read Braille - truly depends on the activity ...
Scaling the wall of deafness
Apr 14, 2009 |
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Despite modern medicine, one in 1,000 American babies are born deaf. The numbers increase markedly with age, with more than 50% of seniors in the United States experiencing some form of hearing loss.
New stem cell therapy may lead to treatment for deafness
Mar 23, 2009 |
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Deafness affects more than 250 million people worldwide. It typically involves the loss of sensory receptors, called hair cells, for their "tufts" of hair-like protrusions, and their associated neurons. The transplantation ...
Diminuendo -- New mouse model for understanding cause of progressive hearing loss
Apr 27, 2009 |
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The respective microRNA seed region influences the production of sensory hair cells in the inner ear, both in the mouse and in humans. The findings have been published ahead of print in the current online issue of Nature Ge ...
Surviving dance club music (noise) with hearing intact
Biology /
Jan 21, 2009 |
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By tweaking a system in the ear that limits how much sound is heard, a global team of researchers has discovered one alteration that shows that the ability of the ear to turn itself down contributes to protecting against ...
Scientists identify genetic cause for type of deafness
Sep 03, 2009 |
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A team led by scientists from The Scripps Research Institute has discovered a genetic cause of progressive hearing loss. The findings will help scientists better understand the nature of age-related decline in hearing and ...
New mouse mutant contains clue to progressive hearing loss
Biology /
Oct 31, 2008 |
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Researchers have defined a mutation in the mouse genome that mimics progressive hearing loss in humans. A team from the Wellcome Trust Sanger Institute in Cambridge, UK, working with colleagues in Munich and Padua, found ...
Fish researcher demonstrates first 'non-visual feeding' by African cichlids
Apr 13, 2009 |
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Most fish rely primarily on their vision to find prey to feed upon, but a University of Rhode Island biologist and her colleagues have demonstrated that a group of African cichlids feeds by using its lateral line sensory ...
