Navigation Links
Born to roar
Date:11/2/2011

SALT LAKE CITY, Nov. 2, 2011 When lions and tigers roar loudly and deeply terrifying every creature within earshot they are somewhat like human babies crying for attention, although their voices are much deeper.

So says the senior author of a new study that shows lions' and tigers' loud, low-frequency roars are predetermined by physical properties of their vocal fold tissue namely, the ability to stretch and shear and not by nerve impulses from the brain.

"Roaring is similar to what a baby sounds like when it cries," says speech scientist Ingo Titze, executive director of the National Center for Voice and Speech, which is administered by the University of Utah. "In some ways, the lion is a large replica of a crying baby, loud and noisy, but at very low pitch."

The study of lion and tiger vocal folds and how they produce roaring vocalizations used by big cats to claim their territory was set for publication Wednesday, Nov. 2, in the Public Library of Science's online journal PLoS ONE.

While the comparison was not part of the study, Titze says a baby "cries to have people come to help it. The lion uses similar attention-getting sound, but mainly to say, 'I am here, this is my territory, get out of here.'"

"In both cases, we hear loud, grating sounds that grab people's ears. When a baby cries, the sound isn't pretty. The sound is basically rough. The vibration isn't regular."

The same is true of roars by lions and tigers, and, like babies, their vocal folds (commonly called vocal cords) are "very loose and gel-like" and vibrate irregularly to make roars sound rough, Titze says. The main difference: Babies cry at a high-pitched frequency, while big cats have a low-frequency roar.

Roaring Frequency Dictated by Structure of Vocal Folds

The new study's key finding is that lions and tigers can roar loudly and deeply because their vocal folds have a flat, square shape and
'/>"/>

Contact: Lee Siegel
lee.siegel@utah.edu
801-581-8993
University of Utah
Source:Eurekalert  

Page: 1 2 3 4 5

Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Born to roar
(Date:10/22/2014)... October 22, 2014 For Dr. Iris Hunter, ... money; it’s an extension of her life’s mission. Her extensive ... as the owner of FirstLight HomeCare, make it clear that ... to me that my work makes a difference in the ... entrepreneurial spirit, so after much research, I felt ready to ...
(Date:10/22/2014)... California (PRWEB) October 22, 2014 Hay House ... Move Beyond Addiction and Upgrade Your Life (Paperback; $10.82) written ... of Yoga & Recovery. This book is meant to ... in a life of recovery. , Recovery 2.0 is ... 12 Steps; Recovery 2.0 is a guide for what comes ...
(Date:10/22/2014)... Weight Your Body’s Way , In a world where a ... certainly can be difficult to choose the right weight loss ... doing it the healthy way? Set aside the fads and ... exercise regularly, and choose foods with the most nutritional benefits. ... to exercise more and eat less. Despite the number of ...
(Date:10/22/2014)... Steven Reinberg HealthDay Reporter , ... add weight and length may be showing a genetic propensity ... adults, certain genes have been linked to increased body fat, ... fat and lean muscle, the researchers said. At 1 ... By ages 2 and 3, however, these genes were linked ...
(Date:10/22/2014)... Oct. 21, 2014 (HealthDay News) -- Measures taken by ... in Ebola-ravaged Liberia may have limited the spread of ... report. The Firestone Natural Rubber Co. provides health ... residents of nearby densely populated communities. Between Aug. ... suspected Ebola cases among those 80,000 people. That incidence ...
Breaking Medicine News(10 mins):Health News:Dr. Iris Hunter to Host Grand Opening of FirstLight HomeCare Tomorrow 2Health News:Hay House Announces The Official Release of Recovery 2.0: Move Beyond Addiction and Upgrade Your Life 2Health News:Hay House Announces The Official Release of Recovery 2.0: Move Beyond Addiction and Upgrade Your Life 3Health News:ReductionGuruMD Presents Ways to Improve Your Weight Loss Results 2Health News:Tall, Heavy 1-Year-Olds May Be at Risk for Obesity Later, Study Finds 2Health News:Tire Company Sets Standard for Ebola Care in Liberia: CDC 2
... refugees in unofficial camps are living in slum conditions redolent ... the Journal of Epidemiology and Community Health. , The research ... Gaza Displacement Centre in Beirut, Lebanon in May 2003. , ... lived in, access to outside air, the presence of mould ...
... release is also available in Spanish . ... expert on nutrition, studied the health benefits of the ... studies on the benefits of olive oil have been ... and Greece (the main olive-oil-producing countries), the incidence of ...
... increase , , THURSDAY, Jan. 17 (HealthDay News) -- The ... three decades, according to a new report released Thursday. ... Jones, senior research associate at the Guttmacher Institute, a ... will be published in the March issue of the ...
... Jan. 17 Cardiva Medical, Inc., a,privately held ... System is pleased to announce the addition of ... Cardiva as Vice President,of Finance and Chief Financial ... Business Development and Marketing., "We are very ...
... Pa., Jan. 16 With Gov. Ed,Rendell refusing to ... Exec. Dir. of the more than 65,000-member Council 13,AFSCME, ... is,mobilizing retiree members to fight back. AFSCME recently sent ... call the governor and to send,provided postcards urging him ...
... SEATTLE, Jan. 16 Hagens Berman Sobol Shapiro has ... ) and,Schering-Plough (NYSE: SGP ), manufacturers of Zetia ... Merck and Schering-Plough,violated state consumer protection laws arising from ... is the combination of Zetia and Zocor, a statin ...
Cached Medicine News:Health News:Palestinian refugees living in 'slum conditions' 2Health News:Consuming extra virgin olive oil helps to combat degenerative diseases such as cancer 2Health News:U.S. Abortion Rate Falls to Lowest Level in Decades 2Health News:U.S. Abortion Rate Falls to Lowest Level in Decades 3Health News:Cardiva Medical, Inc. Appoints Two New Officers: Malcolm Farnsworth as Vice President of Finance and Chief Financial Officer and Tara Zerby as Vice President of Business Development and Marketing 2Health News:AFSCME to Gov. Rendell: Don't Cut Health Benefits for State Retirees! 2Health News:Hagens Berman Sobol Shapiro Announces Investigation Into Marketing of Vytorin and Zetia 2Health News:Hagens Berman Sobol Shapiro Announces Investigation Into Marketing of Vytorin and Zetia 3
(Date:10/22/2014)... , Oct. 22, 2014   Foundation ... WuXi PharmaTech (Cayman) Inc. (NYSE: WX ) ... genomic profiling to biopharmaceutical companies conducting clinical trials in ... the terms of the collaboration, Foundation Medicine will license ... Foundation Medicine,s FoundationOne® assay at the WuXi Genome Center ...
(Date:10/20/2014)... 2014  Luoxis Diagnostics, Inc., a subsidiary of ... that its academic collaborators will present several peer-reviewed ... its novel RedoxSYS Diagnostic System, a first-in-class platform ... in response to injury or illness.  A poster ... clinical marker will be presented by Christopher ...
(Date:10/20/2014)... , Oct. 20, 2014  AnaptysBio, Inc., a ... antibodies, today announced the appointment of Marco ... Londei will lead the preclinical and clinical development ... "We are pleased to welcome Dr. Londei to ... , President and Chief Executive Officer of AnaptysBio. ...
Breaking Medicine Technology:Foundation Medicine and WuXi PharmaTech Announce Strategic Collaboration to Offer Best-in-Class Comprehensive Genomic Profiling in China 2Foundation Medicine and WuXi PharmaTech Announce Strategic Collaboration to Offer Best-in-Class Comprehensive Genomic Profiling in China 3Foundation Medicine and WuXi PharmaTech Announce Strategic Collaboration to Offer Best-in-Class Comprehensive Genomic Profiling in China 4Foundation Medicine and WuXi PharmaTech Announce Strategic Collaboration to Offer Best-in-Class Comprehensive Genomic Profiling in China 5Luoxis to Highlight RedoxSYS at Two Upcoming Scientific Conferences 2Luoxis to Highlight RedoxSYS at Two Upcoming Scientific Conferences 3Luoxis to Highlight RedoxSYS at Two Upcoming Scientific Conferences 4Luoxis to Highlight RedoxSYS at Two Upcoming Scientific Conferences 5AnaptysBio Appoints Dr. Marco Londei to Newly Created Chief Development Officer Position Clinical Immunologist to Lead AnaptysBio's Pipeline Advancement 2
... Workers Ensure Emergency Deliveries are Transported , ... chapter of the American Red Cross are hard at work ... endure that could potentially put Philadelphia,s blood supply at risk. ... up a picket line yesterday when their issues were ignored ...
... , , SALT LAKE CITY, Dec. 4 ... signed a sole-source vendor agreement to provide therapy equipment and ... in Tennessee and Georgia. , "We are pleased to ... Larry K. Beardall, executive vice president of sales and marketing ...
Cached Medicine Technology:Striking Red Cross Workers Raise Public Awareness of Unsafe Working Conditions 2
Express Plus analyzer is a great choice for small and medium workloads....
Iron / TIBC (Ferrozine). Storage temp: 2 - 8 C. Linearity: 0 - 500 ug/dl. Expected values: from TIBC 250 - 400 ug/dl, from Iron 40 - 160 ug/dl. Available with Calibrator and Number of test are 100....
Iron UIBC (UIBC Buffer + Color + Std.). An Automated analyzer test kits....
... determination of HDL-cholesterol in serum ... Specific immunochemical inhibition of non-HDL-lipoproteins. ... methods. Endpoint assay. Unaffected by ... reagent. Available with calibrator: Trucal ...
Medicine Products: