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:
*Name:
*Comment:
*Email:


(Date:10/13/2017)... ... , ... “The Journey: From the Mountains to the Mission Field”: the story ... the Philippines. “The Journey: From the Mountains to the Mission Field” is the creation ... has taught all ages and currently teaches a class of ladies at her church, ...
(Date:10/12/2017)... ... October 12, 2017 , ... CitiDent ... sleep apnea using cutting-edge Oventus O2Vent technology. As many as 18 million ... by frequent cessation in breathing. Oral appliances can offer significant relief to about ...
(Date:10/12/2017)... , ... October 12, 2017 , ... IsoComforter, Inc. ( ... announced today the introduction of an innovative new design of the shoulder pad. ... you get maximum comfort while controlling your pain while using cold therapy. By utilizing ...
(Date:10/12/2017)... ... October 12, 2017 , ... Information about the technology: , ... to enable prevention of a major side effect of chemotherapy in children. Cisplatin ... patients. For cisplatin, hearing loss is FDA listed on-label as a dose limiting ...
(Date:10/12/2017)... ... October 12, 2017 , ... Leading pediatric oncology experts at Children’s ... the 49th Congress of the International Society of Paediatric Oncology (SIOP) Oct. ... Center for Cancer and Blood Disorders at Children’s National, and Stephen P. Hunger, ...
Breaking Medicine News(10 mins):
(Date:9/27/2017)... and NEW YORK , Sept. 27, 2017 /PRNewswire/ ... health and big data solutions, today announced that its MyDario product is ... your local TV listings for when The Dr. Oz Show airs in ... The nine-time ... month. ...
(Date:9/23/2017)... HORSHAM, Pa. , Sept. 22, 2017 ... received a complete response letter from the U.S. Food ... (BLA) seeking approval of sirukumab for the treatment of ... response letter indicates additional clinical data are needed to ... of moderately to severely active RA. ...
(Date:9/19/2017)... 2017 HistoSonics, Inc., a venture-backed medical device company developing a non-invasive, robotically assisted, ... three leadership team developments today:   ... ... Tom Tefft ... Veteran medical device executive Josh Stopek , PhD, who has ...
Breaking Medicine Technology:
Cached News: