HOME >> BIOLOGY >> NEWS
How fish hear and make sounds at same time

ITHACA, N.Y. -- Cornell University researchers have learned how a common fish found along the West Coast can hum and hear outside sounds at the same time.

The study marks the first time that scientists have found a direct line of communication between the part of a vertebrate's brain that controls the vocal muscle system and the part of the ear that hears sound. The researchers believe that understanding the auditory system of the plainfin midshipman fish (Porichthys notatus ) -- a 6- to 10-inch fish found along the coastline from Alaska to California -- will offer insights into how other vertebrates -- including humans -- hear.

The general pattern of connections between neurons in the auditory system is the same in all vertebrates, including mammals. While humans hear with the cochlea of the inner ear, the midshipman uses the sacculus, a part of the ear that in humans detects acceleration or linear movement.

Because the study indicates a relationship between the ear and the auditory and vocalization systems of the brain, it could help scientists understand some of the mechanisms that contribute to deafness.

"We've studied so many things about these fish, and I never cease to be amazed by how similar the operation of their nervous system is to that of mammals," said Andrew Bass, professor of neurobiology and behavior at Cornell, and an author of the study published in the June 22 issue of the Journal of Neuroscience. "You don't need to study a mammal to understand what a mammal does."

The researchers found that as the fish's brain signals vocal muscles to make sound, a number of synchronized actions take place. The ear and brain are cued to the exact timing of a self-generated sound, distinguishing it from outside sounds. Just prior to a voicing, the brain warns the ear it should become less sensitive.

When analyzed closely, the vocalizations can be broken down into a series of impulses separated in time by only milliseconds.
'"/>

Contact: Krishna Ramanujan
ksr32@cornell.edu
607-255-3290
Cornell University News Service
4-Jul-2005


Page: 1 2

Related biology news :

1. Moths mimic sounds to survive
2. Whale bubble nets, saxophone sounds, ultrasonic laser
3. Ultrasounds show mothers drinking shrinks fetal brain
4. Birdsong sounds sweeter because throats filter out messy overtones
5. Devices tease out individual sounds from underwater racket
6. Research tracks whales by listening to sounds
7. Elephants imitate sounds as a form of social communication
8. Baby songbirds and human infants learn sounds in similar ways

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/3/2020)... ... August 03, 2020 , ... ... new partnership with medical equipment manufacturer, Spectrum Solutions, to provide COVID-19 saliva testing ... their laboratory supply chain for more than 10 years. Early in the COVID-19 ...
(Date:7/18/2020)... TORONTO (PRWEB) , ... July 17, 2020 , ... Commercial ... hangs on pharma’s ability to discover a COVID cure or vaccine, the global economic ... competitive and price pressure is not going away and capturing full value from every ...
(Date:7/2/2020)... ... July 02, 2020 , ... ... has announced a publication detailing the use of its revolutionary NEXTGENPCR endpoint ... reaction (RT-PCR) in 16 minutes. The article, titled "Ultra-fast one-step RT-PCR protocol ...
Breaking Biology News(10 mins):
(Date:7/31/2020)... ... July 30, 2020 , ... ... for the life sciences industry, today announced the release of its signature ... for Medical Science Liaisons (MSLs) and other field medical professionals. , ...
(Date:7/18/2020)... ... , ... “We are thrilled to deliver this new technology to the industry” ... kind on the market and we were pleased that the IFT jury recognized that.” ... ingredients, creating a natural way to extend the shelf life and improve the safety ...
(Date:7/10/2020)... ... 2020 , ... Bode Technology, a leading provider ... through its COVID-19 testing service, Bode-CARES . Bode-CARES combines high-volume clinical testing ... provides a turnkey solution that includes a comprehensive collection and virus-management program for ...
(Date:7/10/2020)... Mass. (PRWEB) , ... July 09, 2020 , ... ... approaches to cell therapy, today announced the hiring of Allen R. Nissenson, M.D., ... team and oversee the clinical development of Sentien’s lead product, SBI-101. Dr. ...
Breaking Biology Technology:
Cached News: