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Cochlea in Medical News

One step closer to an artificial nerve cell

...erve signals in the nervous system are based on electrical stimulation. Examples of this are cochlear implants, which are surgically inserted into the cochlea in the inner ear, and electrodes that are used directly in the brain. One problem with this method is that all cell types in the vicinity of the elect...

How the Ear Protects Your Hearing

...factory where there's lots of loud, low-frequency noise from the machinery," he explained. "It's conceivable that this could turn down the part of the cochlea hit by low frequencies." The system is somewhat akin to a stereo system that allows listeners to adjust the treble and bass, Fuchs said. Resear...

Also in the Dec. 30 JNCI

...olleagues measured the amount of cisplatin and oxaliplatin that reached the cochlea in guinea pigs following intravenous dosing of each drug. The total platinum concentration in the cochlea was more than five-fold higher with cisplatin than with oxaliplatin followi...

MRI Detects Soft Tissue Damage Affecting Kids' Hearing

...ous labyrinth and the cochlear nerve, are not evaluated well with high-resolution CT." "With MRI, these soft tissue components of hearing from the cochlea to the auditory cortex can be elucidated, which should improve our ability to appropriately diagnose the location of the defect in these children with...

Sound Pharmaceuticals Receives Additional DoD Funding for Its Hearing Regeneration Product

... absent. SPI has developed this novel technology into a drug that inhibits p27Kip1 in wild type cells and tissues, and is injecting that drug into the cochlea of deafened Guinea pigs. Results indicate that renewed supporting cell proliferation and hair cell regeneration occur in animals that have lost their ...

St. Jude finds 'dancing' hair cells are key to humans' acute hearing

...lectrically powered amplification mechanism in the cochlea of the ear is critical to the acute hearing of hum...se of drugs such as aspirin. Sound entering the cochlea is detected by the vibration of tiny, hair-like ci...far less sensitive, since sound waves entering the cochlea are severely diminished as they pass through the i...

Pitch Patterns Play Greater Role in Speech Perception

...he auditory pathway, just 7 to 9 milliseconds from the time the auditory signal enters the ear. This is also near where pitch processing begins in the cochlea and the auditory nerve. "Never did I expect we would find that language experience would shape the way the brain stem works," Gandour said. "The id...

New findings contradict a prevailing belief about the inner ear

...rd-traveling wave going along the structure of the cochlea in the same way as the forward-traveling sound wav...membrane essentially cuts the inner channel of the cochlea diametrically in half into two chambers. Both cham...ar undulate along the basilar membrane through the cochlea and eventually excite the organ of Corti, which se...

Neural Insights Could Bring Better Cochlear Implants

...ed. In this latest research with mouse cochlear tissue cultured in the laboratory, Davis and colleagues found that two neurotrophin proteins in the cochlea -- brain-derived neurotrophic factor (BDNF) and neurotrophin-3 (NT-3) -- play an important role in the relay of sound messages to the brain. It may...

NYU study points to lasting impact of mild hearing loss on neurological processes

... been unable to conclusively determine the neurological impact of mild forms of hearing loss, which occurs when the pathway by which sound reaches the cochlea is disruptedsuch as is experienced with middle ear infections during childhood. The NYU study sought to address this question in an animal model by me...

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Cochlea in Medical Technology

St. Jude Finds 'Dancing' Hair Cells Are Key to Humans' Acute Hearing

...tors have found that an electrically powered amplification mechanism in the cochlea of the ear is critical to the acute hearing of humans and other mammals. Th...netic mutation or overdose of drugs such as aspirin. Sound entering the cochlea is detected by the vibration of tiny, hair-like cilia that extend from coch...
Cochlea in Medical Dictionary

Cochlea

Buy The Cochlea for $129.95 now and save. Buy.com has books: new ~ used ~ paperbacks ~ NYTBS at the lowest prices. The internal ear, comprising the semi-circular canals, vestibule and cochlea . LAMINA ... The flattened or arched part of the vertebral arch, forming the roof ... cochlea ...

Tinnitus

...hearing nerve ... Tinnitus help for patients ... What Causes Tinnitus ? Most tinnitus comes from damage to the inner ear, specfically the cochlea (the ... Information and resources concerning tinnitus (sometimes called ringing, roaring, ... How will hearing experts treat my tinnitus ? ...
Cochlea in Biological News

Study links low-frequency hearing to shape of the cochlea

Shape matters, even in hearing. Specifically, it is the shape of the cochlea the snail-shell-shaped organ in the inner ear that converts sound waves into nerve impulses that the brain deciphers which proves to be surprisingly important. A study published online last week in the Proceedings o...

Case Western Reserve University receives $1.66m grant from NIH for otoprotection research

...the cells that provide the sense of hearing by sending sound waves from the cochlea to the brain. Dr. Zheng believes residual hair cells in the cochlea could promote the survival of the spiral ganglion neurons by release of neu...

Audience Selected as Silver Winner in This Year's Wall Street Journal Technology Innovation Awards and Winner of the Semiconductors Category

...'s Wall Street Journal Technology Innovation Awards and the winner of the Semiconductors category. By understanding the auditory pathway -- from the cochlea to the brainstem to the thalamus and cortex -- Audience is the first company to deliver a commercial product based on the science of Auditory Scene An...

Biophysical method may help to recover hearing

...eason for the lack of success could be because the cochlea the hearing sensor must be fully embedded into t...ould enable the remapping of frequencies where the cochlea malfunctions to neighboring intact cochlear areas....rmation is lost and the tuning capabilities of the cochlea can be fully utilized. Their findings indicate ...

St. Jude study solves mystery of mammalian ears

... Protein motor in cochlea hair cells dominates the process of sound amplification in the mammalian ea... the response of the outer hair cells’ cilia to incoming sound waves in the cochlea fluid. Instead, somatic motility itself appears to dominate the amplificati...

Noise echoes in cell communications

...G image. The findings could have numerous applications ?most obviously in treating hearing loss by artificially increasing the amount of noise in the cochlea of the inner ear, perhaps by an implanted device. Hong, Saidel and Martin applied this principle of noise to another process called "quorum sensi...

Scientists identify molecular cause for one form of deafness

...of deafness, and a conceptual connection between deafness and the organization of liquid crystals, which are used in flat-panel displays. Within the cochlea of the inner ear, sound waves cause the basilar membrane to vibrate. These vibrations stimulate hair cells, which then trigger nerve impulses that are...

Study shows isolation of stem cells may lead to a treatment for hearing loss

...s. Identification of the stem cells from the adult cochlea would be a major step forward to develop new thera...eural progenitors. This led us to hypothesize that cochlea harbors stem cells and neural precursor cells. Our...splanting these cochlear stem cells into the adult cochlea to affect hair cell replacement in the mouse, by e...

Critical hearing gene helps send auditory messages to brain

...to confirm that notion. They now report that otoferlin activity in the cochlea occurs only in the inner hair cells, where it concentrates in the ribbon-as...lyze sound messages and convert them into electrical signals, bypassing the cochlea to directly stimulate the auditory nerves. "That's good news," Petit sa...

Sooner is better with cochlear implants, Stanford scientist shows

... Cochlear implants allow the deaf to hear. Their brains learn to understand the artificial electrical stimulation that the implants provide to the cochlea as sound. A Stanford neurobiologist teamed with child-development specialists at the University of Maryland to see if children with cochlear implant...
Cochlea in Biological Technology

New MIT radio chip mimics human ear

...er and also operates at much lower power. "The cochlea quickly gets the big picture of what's going on in...have also filed for a patent to incorporate the RF cochlea in a universal or software radio architecture that...s Internet, FM, and other signals. Copying the cochlea The RF...

Rutgers neuroscience may hold key to hearing loss remedy

...nserted into the snail-shell shaped structure the cochlea within the inner ear. Ordinarily, hair cells line the cochlea and convert acoustic signals into electrical signa...ar tissue cultured in the laboratory. The spiraled cochlea is unwound and laid out in a line. Davis described...

Mouse Brain or Impressionist Painting?

...hio State University, for his photo of a chicken retina; Sonja Pyott of the University of North Carolina, Wilmington, for her image of tiny vertebrate cochlea and hair cells; Thomas Deerinck of the National Center for Microscopy and Imaging Research at UCSD for his photos of rat tongue and cerebellum; Pat Wa...
Cochlea in Biological Dictionary

Cochlea

The cochlea is the auditory portion of the inner ear. Its core component is the Organ of Corti, the sensory organ of hearing, which is distributed along the partition separating fluid chambers in the coiled tapered tube of... A cochlear implant (CI) is a surgically implanted electronic dev...

Pinna

...; ... pinna n. , pl. pinnae or pinnas . Botany. A leaflet or primary division of a pinnately compound leaf ... What organ includes a cochlea and a pinna ? ... Pinna (anatomy) Pinna (anatomy) The auricula . Lateral surface. Latin auricula Gray's subject #229 1034 Artery posterior ...

Concentration gradient

...ncentration gradient . Also found in: Medical, Encyclopedia, Wikipedia, Hutchinson ... Concentration gradients of other substances along the cochlea have recently been ... The existence of these concentration gradients had already been implicated in ... rapid diffusion "down" a concentra...
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