Navigation Links
Frog’s ear canal may provide insights for understanding human hearing loss

inspired we can be in developing new treatments for hearing loss," said James F. Battey, director of the NIDCD.

Ultrasounds are high-pitched sounds more than 20 kilohertz (kHz) in frequency, exceeding the upper limit of sounds detectable by humans, and far higher than the 12 kHz frequencies that most amphibians, reptiles and birds are capable of hearing and producing. Key parts of the ear must be specially adapted to detect ultrasounds -- namely, the eardrum must be very thin to vibrate effectively at these high frequencies, and the bones of the middle ear must be extremely lightweight in order to transmit ultrasonic vibrations to the inner ear. The presence of an ear canal not only protects A. tormotus' thin and fragile eardrum from the environment, but also lessens the distance between the eardrum and the inner ear, thus allowing the bones of the middle ear to be shorter, and as a result, lighter in weight.

Scientists have known for several years that A. tormotus males produce high-pitched, birdlike calls that extend into the ultrasonic range. What remained to be tested was whether the ultrasounds were a byproduct of the frog's sound-production system or were heard and responded to by other males of that species. Researchers Albert S. Feng, an auditory neuroscientist at the University of Illinois, Urbana-Champaign; Narins, who studies auditory behavior, neurophysiology and mechanics; and colleagues conducted behavioral and physiological studies to investigate A. tormotus' hearing ability.

The researchers first wanted to know whether A. tormotus can hear ultrasounds. They recorded a male's call, split it into the audible components and ultrasonic components, and observed the responses of eight A. tormotus males to each of the split sounds. Five of the eight frogs produced calls in response to the audible, ultrasonic or both components of the species call, and three did not. Results of the behavioral observations showed that males were capab
'"/>

Source:University of California - Los Angeles


Page: 1 2 3

Related biology news :

1. Stimulation of the semicircular canals can artificially control human walking and balance
2. Like a snail through the intestinal canal
3. Experiments provide proof of how traveling in groups protects insects
4. Experiments provide proof of how traveling in groups protects insects
5. ASU researchers finds novel chemistry at work to provide parrots vibrant red colors
6. MetaChip provides quick, efficient toxicity screening of potential drugs
7. Alaskan puzzles, monitoring provide insight about North Pacific salmon runs
8. NYU and MSKCC research provides model for understanding chemically induced cancer initiation
9. Nature provides inspiration for important new adhesive
10. Hydrogen and methane provide raw energy for life at Lost City
11. Research may provide new link between soft drinks and weight gain
Post Your Comments:
(Date:7/9/2014)... are turning to more healthful alternatives to their savored ... mean low satisfaction. Now researchers are reporting new progress ... are made with olive oil rather than pork fat. ... Agricultural and Food Chemistry . , Ana M. Herrero ... expect just the right amount of chewiness and springiness, ...
(Date:7/9/2014)... on the verge of an economy driven by methane, the ... and is undergoing a production boom. It has poised the ... is casting serious doubts over just how climate-friendly it is, ... (C&EN), the weekly news magazine of the American Chemical ... at C&EN, explains that when burned as a fuel to ...
(Date:7/9/2014)... protect neuronal function and increase the survival rate ... her team, School of Pharmaceutical Sciences, Southwest University, ... mice were administered with low dose of levothyroxine ... aged rats exhibited an obvious improvement in cognitive ... to 93%. The underlying mechanism was demonstrated that ...
Breaking Biology News(10 mins):
... The first State of the Carbon Cycle Report for North ... Science Program, finds the continents carbon budget increasingly overwhelmed by ... tons of carbon into the atmosphere each year, mostly as ... may remove up to half this amount, but these current ...
... In the December 1st issue of G&D, Dr. Hailing ... of a new class of small RNAs in Arabidopsis. ... dubbed long short interfering RNAs (lsiRNAs), and are induced ... liRNAs share some hallmark features with other, previously identified ...
... Researchers from Kaiser Permanente and the California Department of ... nationwide, today will begin enrolling families in the largest ... that may cause autism and other developmental disabilities. ... Early Development, will involve 2,700 children and their parents ...
Cached Biology News:First-ever 'State of the Carbon Cycle Report' finds troubling imbalance 2Largest study to investigate risk factors of autism to begin enrolling families 2
(Date:1/14/2014)... 14, 2014 Date: Friday, April 11, 2014 ... Country Club, 1360 Almshouse Road, Warrington, Pa. , ... solely dedicated to finding a cure for hepatitis B and ... host its annual Crystal Ball on Friday, April 11 at ...
(Date:1/14/2014)... , Jan. 14, 2014 As pet owners drew up their ... of them wrote: "Take better care of my furry companion." Nowadays ... clothes and top-brand carrying cases to take the little canine or ... also feel compelled to buy some pricey toys at the pet ...
(Date:1/14/2014)... 2014 iLab Solutions, the leader in core ... Director of Product Strategy. In this role, Michelle will work ... to guide in the development of iLab products. Her main ... possible benefit to the scientific community by offering the most ...
(Date:1/14/2014)...   Kinaxis ®, provider of RapidResponse ®, a cloud-based ... planning ( S&OP ) service, is proud to be a ... be held at the Hilton San Diego Bayfront, January 30 ... Elisabeth Kaszas , Director of Supply Chain at Amgen, as ...
Breaking Biology Technology:Hepatitis B Foundation to Host Annual Crystal Ball Gala 2New Year's Resolution: Give Pets the Gift of Top-Notch Health Care 2iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2
... , SAN DIEGO, July 27 Neurocrine Biosciences (Nasdaq: NBIX ) ... Neurocrine Biosciences Webcast, When: July 30, 2009 ... Live over the Internet -- Simply log on to the web ... above., Contact: Jane Sorenson of Neurocrine Biosciences, +1-858-617-7653., , ...
... , , , ... (PTC) today announced the initiation of a Phase 2 clinical ... (NF2), a rare genetic disorder that causes the development of ... investigational new drug that is designed to selectively block tumor-related ...
... Biotech Inc. ("Oncolytics") (TSX:ONC, NASDAQ: ONCY ) announced ... SAFC Pharma(R), a Division of Sigma-Aldrich Corporation, it has ... under cGMP conditions. This run is anticipated to be ... the next several years as Oncolytics provides product for ...
Cached Biology Technology:PTC Therapeutics Initiates Phase 2 Clinical Trial of PTC299 in Patients with Neurofibromatosis Type 2 2PTC Therapeutics Initiates Phase 2 Clinical Trial of PTC299 in Patients with Neurofibromatosis Type 2 3PTC Therapeutics Initiates Phase 2 Clinical Trial of PTC299 in Patients with Neurofibromatosis Type 2 4Oncolytics Biotech Inc. Successfully Completes 100-Litre cGMP Production of REOLYSIN(R) 2
WD-repeat protein 4...
Rabbit polyclonal to MDM2 (phospho S185) ( Abpromise for all tested applications). entrezGeneID: 4193 SwissProtID: Q00987...
... human omental preadipocytes are ... otherwise healthy donors. There ... diabetic cells. Please inquire ... media also available. Academic ...
ASCIZ...
Biology Products: