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Cochlea in Medical News

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

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

New findings contradict a prevailing belief about the inner ear

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

Also in the Dec. 30 JNCI

... 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 ...

One step closer to an artificial nerve cell

... 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 ...

How the Ear Protects Your Hearing

... 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. ...

MRI Detects Soft Tissue Damage Affecting Kids' Hearing

... 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 ...

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 ...

Pitch Patterns Play Greater Role in Speech Perception

... 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 ...

Neural Insights Could Bring Better Cochlear Implants

... 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 ...

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 ...

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Cochlea in Medical Technology

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

... 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. ... 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 ...
Cochlea in Medical Dictionary

Cochlea

... cochlea r implant : A small complex electronic device ... with certain types of deafness to hear. cochlea r implant Information: A cochlea r implant is a small electronic device that ...

Hearing

... are transmitted to the fluid surrounding the cochlea and hearing results. 1 2 ... Hearing ... age-related changes to the sensory cells of the cochlea , to damage to the brain. Hearing loss is ... affecting hearing before the sound reaches the cochlea and the nerve receptors of the inner ear. ...

Acoustic

... (OAE) measures an acoustic response that is produced by the inner ear ( cochlea ), which in essence bounces back out of the ear in response to a sound ... which occurs most often in men between the ages of 40 and 60, the cochlea r duct of the inner ear is found to be enlarged, as a result of ...

Deafness

... deafness is an irreversible type of hearing loss that occurs when cochlea r sensorineural elements or the cochlea r nerve is damaged in some way; it can progress to total deafness in ...

Hearing Loss

... ear canals, through to age-related changes to the sensory cells of the cochlea , to damage to the brain. HEARING LOSS SYMPTOMS"One's sense of ... and adults with severe to profound sensorineural hearing loss . Mfg: cochlea r Corporation. Tinnitus is an aggravating problem which is often ...

Labyrinth

... vagina e; paries caroticus cavi tympani; paries externus ductus cochlea ris; paries inferior orbit ae; paries jugular is cavi tympani; paries ... which occurs most often in men between the ages of 40 and 60, the cochlea r duct of the inner ear is found to be enlarged, as a result of ...

Ossicle

... three tiny bones of the ear ( ossicle s) may fail to conduct sound to the cochlea or the eardrum may fail to vibrate in response to sound. Fluid in the ... three tiny bones of the ear ( ossicle s) may fail to conduct sound to the cochlea or the eardrum may fail to vibrate in response to sound. Nerve loss ...

Temporal

... warm dry Compress , repeated every 2 hours. paries tympanicus ductus cochlea ris; paries vestibularis ductus cochlea ris; parietal; parietal angle; parietal arteries; parietal bone; parietal ...

Acoustic trauma

... clean them sometimes causes a perforation of the eardrum . In the disorder, which occurs most often in men between the ages of 40 and 60, the cochlea r duct of the inner ear is found to be enlarged, as a result of acoustic trauma , viral endolymphatic labyrinthitis , and oto toxic drugs. ...

Aneurysm

... ECT; ectacolia; ectad; ectal; ectal origin; ectasia; ectasia cordis; ectasia ventriculi paradoxa; ectatic; ectatic aneurysm ; ... inner ear [ cochlea r] implants, brain aneurysm clips, some artificial heart valves, pacemaker s, older vascular stent s) are not compatible with MRI . The ...

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Cochlea in Biological News

Biophysical method may help to recover hearing

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

Study links low-frequency hearing to shape of the cochlea

... hearing. Specifically, it is the shape of the cochlea the snail-shell-shaped organ in the inner ear ... effects with the physical characteristics of the cochlea have proven unsatisfactory because they did not ... a paper proposing that the helical shape of the cochlea enhances low-frequency sounds through an effect ...

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

... 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 ...

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

... 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 ...

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

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

St. Jude study solves mystery of mammalian ears

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

Critical hearing gene helps send auditory messages to brain

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

Noise echoes in cell communications

... 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 ...

Scientists identify molecular cause for one form of deafness

... 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 ...

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 ...

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Cochlea in Biological Technology

New MIT radio chip mimics human ear

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

Rutgers neuroscience may hold key to hearing loss remedy

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

Mouse Brain or Impressionist Painting?

... 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 ...
Cochlea in Biological Dictionary

Cochlea

... The cochlea is the auditory portion of the inner ear. Its ... element of this site, please contact ... The cochlea is the auditory portion of the inner ear. ... At the base of the cochlea each scala ends in a membrane that faces the ...

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

... 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 ...

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