HOME >> MEDICINE >> NEWS
A new math model finds that the cochlea's spiral shape enhances low frequencies

The next time someone whispers in your ear, think "cochlea."

The cochlea is the marvelous structure in the inner ear that is shaped like a snail shell and transforms sounds into the nerve impulses that your brain can process and interpret. You may remember learning about it in elementary school anatomy.

This critical hearing organ consists of a fluid-filled tube about a cubic centimeter (three hundredths of an ounce) in volume. For decades, hearing experts thought that its spiral shape was simply an efficient packing job and its shape had no effect on how it functions. But a recent study headed by Vanderbilt mathematician Daphne Manoussaki calls this conventional wisdom into question. She and her colleagues, Richard Chadwick and Emilios Dimitriadis of the National Institutes of Health, have created a mathematical model of the cochlea that finds the spiral shape acts to enhance the low frequency sounds that we use to communicate with one another. They published the results recently in the journal Physical Review Letters.

If the new model is correct, then the cochlea is more sophisticated than researchers have thought. "This would indicate we need to take a step back from the cell biology and see how the cochlea works as an integrated system," says Karl Grosh, who studies the ear's structure at the University of Michigan in Ann Arbor. "The more we understand how the cochlea works, the more success we will have in building signal processing systems that mimic its auditory characteristics an important aspect in designing cochlear implants and analog cochlear processors." According to the National Institute on Deafness and Other Communications Disorders, about 59,000 people have received cochlear implants worldwide and about 250,000 are potential candidates.

Manoussaki is an assistant professor of mathematics and her main interest is modeling cell movements. She got involved in studying the cochlea inadvertently. After she finished her do
'"/>

Contact: David F. Salisbury
david.salisbury@vanderbilt.edu
615-343-6803
Vanderbilt University
8-May-2006


Page: 1 2 3

Related medicine news :

1. Test project of patient-centered medical home model endorsed by American College of Physicians
2. Chromatin remodeling complex connected to DNA damage control
3. Mouse model points to possible new strategy for treating rare muscle disease, kidney disorders
4. Green tea extract protects against brain damage in new mouse model of HIV-related dementia
5. Assessment model based on medical history gauges lung cancer risk
6. ISHLT membership explores expansion of computer modeling system for organ allocation
7. Johns Hopkins develops pancreas cancer risk model
8. Latest IPCC report highlights need for integrated climate/human behavior models
9. Transdermal vaccine effective in treating Alzheimers disease in mouse model
10. Structure essential for brain remodeling identified
11. Math model predicts cancer behavior

Post Your Comments:
(Date:11/23/2014)... (PRWEB) November 23, 2014 AngelWeddingDress.com ... worldwide a new selection of beach wedding dresses. “If ... best prices, visit AngelWeddingDress.com as soon as possible. Here ... workmanship.” The sales manager says. , Holding a big ... girl. And choosing a beautiful beach wedding dress is ...
(Date:11/23/2014)... Syngenta lawsuits are now being investigated ... and agribusinesses that have allegedly incurred significant financial damages ... and Agrisure Duracade, genetically modified (GMO) corn seed ... in China. According to a report from Bloomberg News, ... corn imports. Because China is the third-largest American corn ...
(Date:11/22/2014)... SC (PRWEB) November 23, 2014 Every ... to their communities. AlignLife experience rapid growth in the ... a very unique opportunity. AlignLife of Simpsonville ... AlignLife offices for their first annual Toy Drive. These ... charity they would support with this year's toy drive. ...
(Date:11/22/2014)... Recently, UWDress.com, a successful wedding dress shop, has released its ... order to prepare for the wedding season. All of them ... , UWDress.com is a reliable company that has many years ... items -- formal wedding guest attire. This new collection comes ... and princess. As one of the leading companies in the ...
(Date:11/22/2014)... Today, Dylan Queen, a renowned brand in ... dresses; the business offers a wide range of special ... worldwide, allowing them to create multiple looks easily. , ... new collection of chic wedding dresses has been prepared ... at discounted rates now. Dylan Queen can always create ...
Breaking Medicine News(10 mins):Health News:Beach Wedding Dresses Added to Outstanding Online Dress Company AngelWeddingDress.com 2Health News:Syngenta Lawsuits Being Investigated by Wright & Schulte LLC, Following China’s Rejection of Corn Shipments Tainted with Unapproved GMO Seed 2Health News:Syngenta Lawsuits Being Investigated by Wright & Schulte LLC, Following China’s Rejection of Corn Shipments Tainted with Unapproved GMO Seed 3Health News:Greenville Area AlignLife Offices Join Together for a Local Toy Drive 2Health News:Formal Wedding Guest Attire Added to UWDress.com 2Health News:Dylan Queen Introduces Its New Wedding Dresses 2
(Date:11/21/2014)... SAN CLEMENTE, Calif. , Nov. 21, 2014 /PRNewswire/ ... Lab Coats and Performance Scrubs carried out a new ... the medical industry,s very first "limited edition" lab ... the first female professors of surgery in the world. ... departure from its unisex predecessors, with a sleek envelope ...
(Date:11/21/2014)... EVANSTON, Ill. , Nov. 21, 2014  Heated ... prescription drug prices – from cancer treatments to Gilead,s ... and pharmaceutical leaders around the world questioning what it ... quality of care. And while drug ... the pharmaceutical industry – from both a general business ...
(Date:11/21/2014)... 2014 Clementia Pharmaceuticals, ... dass die Europäische Arzneimittel-Agentur (European Medicines ... Orphan-Medizinprodukt an Palovarotene vergeben hat, den ... von Fibrodysplasia ossificans progressiva (FOP). FOP ... Krankheit, die von schmerzhaften, wiederkehrenden Episoden ...
Breaking Medicine Technology:Medelita Introduces Medical Industry's First Limited Edition Women's Designer Lab Coat 2"The Price of Global Health" Tackles Worldwide Drug-Pricing Debate 2"The Price of Global Health" Tackles Worldwide Drug-Pricing Debate 3"The Price of Global Health" Tackles Worldwide Drug-Pricing Debate 4"The Price of Global Health" Tackles Worldwide Drug-Pricing Debate 5Clementia Pharmaceuticals erhält EMA-Kennzeichnung als Orphan-Medizin für Palovarotene zur Behandlung von Fibrodysplasia ossificans progressiva 2Clementia Pharmaceuticals erhält EMA-Kennzeichnung als Orphan-Medizin für Palovarotene zur Behandlung von Fibrodysplasia ossificans progressiva 3
Cached News: