Navigation Links
Study shows how elephants produce their deep 'voices'
Date:8/2/2012

African elephants are known to be great communicators that converse with extremely low-pitched vocalizations, known as infrasounds, over a distance of miles. These infrasounds occupy a very low frequency rangefewer than 20 Hertz, or cycles, per secondthat is generally below the threshold of human hearing.

Now, a new study shows that elephants rely on the same mechanism that produces speech in humans (and the vocalizations of many other mammals) to hit those extremely low notes. Christian Herbst from the University of Vienna, along with colleagues from Germany, Austria and the United States, used the larynx of a recently deceased elephant to recreate some elephant infrasounds in a laboratory.

Their findings are published in the 3 August issue of the journal Science, which is published by AAAS, the nonprofit science society.

"These vocalizations are called infrasounds because their fundamental frequency is below the range of human hearing," explained Herbst during a phone interview. "We only hear the harmonics of such sounds, or multiples of that fundamental frequency. If an elephant's vocal folds were to clap together at 10 Hertz, for example, we would perceive some energy in that sound at 20, 30, 40 Hertz and so on. But these higher overtones are usually weaker in amplitude."

Until now, researchers have wondered whether these low, rumbling elephant infrasounds were created by intermittent muscle contractions, as a cat's purr is, or by flow-induced vocal fold vibrations, fueled by air from the lungs, as is a human's voice. But, the natural death of an elephant at a zoo in Berlin gave Herbst and his colleagues a somewhat serendipitous chance to study the mechanism firsthand.

The researchers removed the elephant's larynx and froze it within a few hours of the animal's death. They then took it over to the larynx laboratory in the Department of Cognitive Biology at the University of Vienna, where Tecumseh Fitch
'/>"/>

Contact: Natasha Pinol
npinol@aaas.org
202-326-6440
American Association for the Advancement of Science
Source:Eurekalert  

Page: 1 2

Related biology news :

1. Bacteria-immune system fight can lead to chronic diseases, study suggests
2. Study finds healthy seafood comes from sustainable fish
3. New study: Running mechanics, not metabolism, are the key to performance for elite sprinters
4. Cut emissions further or face risks of high air pollution, study shows
5. Study of zebra fish mouth formation may speak to Fraser syndrome hearing loss
6. $5 million grant awarded to UC Riverside to study immortality
7. To know a tiger is at least to start tolerating them, study shows
8. BUSM study identifies receptors role in regulating obesity, type 2 diabetes
9. Study associates excess maternal iodine supplementation with congenital hypothyroidism in newborns
10. New study associates excess maternal iodine supplementation with congenital hypothyroidism
11. Its a bird, not a plane: York U study finds migrating songbirds depart on time
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Study shows how elephants produce their deep 'voices'
(Date:7/21/2015)... 2015  NXT-ID, Inc. (NASDAQ: NXTD ) ... focused on the growing mobile commerce market and ... it has filed provisional patent 62/192218 for ... This invention highlights next generation payment technology ... but also the user using unique personal identifiers ...
(Date:7/13/2015)... 2015 Synaptics Inc. (NASDAQ: SYNA ... today announced sampling of ClearPad ® 4300, ... (TDDI) product targeting smartphones and tablets. This new ... , best-in-class touch controller IP and systems ... in the company,s Japan Design Center. TDDI enables ...
(Date:7/9/2015)... 2015 Research and ... the "Biometrics for Banking; Market & Technology ... to their offering. The adoption for ... growth and the forecast is that by 2020 ... companies involved in delivering biometric systems to the ...
Breaking Biology News(10 mins):NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 2NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 3NXT-ID Patents Personalized Tokenized Payments for Next Generation Secure Payment Technology 4Synaptics Announces Sampling of Second Generation TDDI Solutions 2Synaptics Announces Sampling of Second Generation TDDI Solutions 3Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 2Global Banking Biometrics Market 2015-2020 - Market & Technology Analysis, Adoption Strategies and Forecasts 3
... vibrant insects, with colorations sometimes designed to deflect predators. ... defenses may be driven by enemies one-tenth their size. ... researchers have believed large predators like birds mainly influenced ... behavioral study to directly test the defense mechanism of ...
... be it heat or electricity, has to be used right ... its transportation can be rather complicated. Creating solar cells capable ... that is to say fuel, is therefore the future challenge ... are working on a catalyst that imitates and improves what ...
... amino acids in order to conduct electricity, according to a ... open-access journal of the American Society for Microbiology, on Tuesday, ... sulfurreducens uses these nanowires, called pili, to transport electrons ... of these wires can also be harnessed by humans for ...
Cached Biology News:UF study shows spiders, not birds, may drive evolution of some butterflies 2UF study shows spiders, not birds, may drive evolution of some butterflies 3Catalysts that produce 'green' fuel 2Biological wires carry electricity thanks to special amino acids 2
(Date:7/30/2015)... ... ... part of its 2015 growth plan and as a follow up to the recently announced ... Laboratories is pleased to announce that it has begun construction on a new Microbiological Laboratory. ... be strictly dedicated to basic USP 51, USP 61, and USP 62 testing specific to ...
(Date:7/29/2015)... , July 30, 2015 ... reports results for the second quarter of 2015. ... group,s results and its performance in different businesses. ... http://www.eurobusinessmedia.com/ceo-direct/sanofi/sanofi-h1-2015-results-interview-with-ceo-olivier-brandicourt?utm_source=ceo-direct&utm_medium=wire Topics ... Q2 results - Performance drivers ...
(Date:7/29/2015)... -- According to a new market research report, ... (2015-2020), , published by Mordor Intelligence, the Global market is ... of 2020, with North America being ... the global market size. The Global market for Stem Cells ... the period of (2015-2020).      (Logo: http://photos.prnewswire.com/prnh/20150428/740799) , ...
(Date:7/29/2015)... (Q2 2015: +14% CER / 20% of sales) led the regional performance ... , as well as solid contributions from Korea, India ... Middle East / Africa (Q2 ... , Turkey and the United Kingdom ... 11%, excluding U.S. HPV sales, on demand across all customer classes. The top ...
Breaking Biology Technology:Whitehouse Labs Formally Announces Plans to Open a Microbiological Laboratory 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 2Asia Pacific to Dominate the Global Stem Cell Market - Vericel Corporation, Ocata Therpeutics, Athersys Inc., Cryo-Cell International, Geron Corporation, StemCells, Inc. Among the Major Players 3QIAGEN Reports Results for Second Quarter and First Half of 2015 2QIAGEN Reports Results for Second Quarter and First Half of 2015 3QIAGEN Reports Results for Second Quarter and First Half of 2015 4QIAGEN Reports Results for Second Quarter and First Half of 2015 5QIAGEN Reports Results for Second Quarter and First Half of 2015 6QIAGEN Reports Results for Second Quarter and First Half of 2015 7QIAGEN Reports Results for Second Quarter and First Half of 2015 8QIAGEN Reports Results for Second Quarter and First Half of 2015 9QIAGEN Reports Results for Second Quarter and First Half of 2015 10
... June 11 MedNet Solutions, a global life sciences ... will unveil a variety of exciting new and enhanced ... Annual Meeting, June 22-24, 2009, in San Diego, CA. ... its market-leading electronic data capture/eClinical tool set to improve ...
... ... how Earned Value Management can improve control over clinical development costs, payments, and accruals ... , ... (PRWEB) June 11, 2009 -- ClearTrial ( www.cleartrial.com ), a leading provider of clinical ...
... (Nasdaq: MDVN ) today ... CONNECTION study, a six-month, confirmatory, pivotal Phase 3 trial ... Alzheimer,s disease. , , The international, double-blind, ... the enrollment target of 525 patients. More than 40 ...
Cached Biology Technology:MedNet Solutions to Introduce New EDC/eClinical Technologies at the 2009 Drug Information Association Annual Meeting 2ClearTrial Industry Expert to Lead Session at DIA Annual Meeting on Improving Accrual and Contract Management in Clinical Trials 2Medivation Completes Enrollment in Confirmatory, Pivotal Phase 3 'CONNECTION' Trial of Dimebon in Patients With Alzheimer's Disease 2Medivation Completes Enrollment in Confirmatory, Pivotal Phase 3 'CONNECTION' Trial of Dimebon in Patients With Alzheimer's Disease 3Medivation Completes Enrollment in Confirmatory, Pivotal Phase 3 'CONNECTION' Trial of Dimebon in Patients With Alzheimer's Disease 4
Mouse Laminin-1 MAb (Clone AL-3)...
IEX-1 S/L (H-20)...
... Strong reactivity with rat ... and guinea pig (48%). ... Specificity confirmed by Western ... Goa, rat Gia-1, Gia-2, rat ...
IgG2b, k APC clone A95-1, Isotype Rat IgG2b, kappa, 0.1 mg ....
Biology Products: