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sounds in Biological News

Bats pick up rustling sounds against highway background noise

Listening for faint rustling noises made by tasty beetles on a quiet day is simple for bats hunting with their exquisitely sensitive hearing. So try imagining what it must be like trying to locate rustling treats just metres from a roaring highway. It would seem to be almost impossible to pick out...

Florida's 'worm grunters' collect bait worms by inadvertently imitating mole sounds

When biologist Ken Catania heard about the peculiar practice of worm grunting practiced in the Apalachicola National Forest in the Florida Panhandle one of his first thoughts was an observation made by Charles Darwin. Worm grunting involves going into the forest, driving a wooden stake into the ...

Moths mimic sounds to survive

In a night sky filled with hungry bats, good-tasting moths increase their chances of survival by mimicking the sounds of their bad-tasting cousins, according to a new Wake Forest University study. Published in the May 29 issue of the Proceedings of the National Academy of Sciences, the study is ...

Mosquito repellents that emit high-pitched sounds don't prevent bites

A Cochrane Systematic Review of the use of electronic mosquito repellents (EMRs) failed to find any evidence that they work. The researchers therefore say that there is no reason for recommending their use, and that there is no reason for even trying to do more research with the devices. Malaria ...

How fish hear and make sounds at same time

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 musc...

Elephants imitate sounds as a form of social communication

Elephants learn to imitate sounds that are not typical of their species, the first known example after humans of vocal learning in a non-primate terrestrial mammal. The discovery, reported in today's Nature, further supports the idea that vocal learning is important for maintaining individual socia...

Naming evolution's winners and losers

...ecies, approximately 5,500 frog species, some 3,000 snake species and 5,200 lizard species, Alfaro said. The number of frog species, although it sounds high, is about what Alfaro would expect, given how old they are approximately 250 million years old. "Our analysis suggests we should not be su...

Forest fire prevention efforts will lessen carbon sequestration, add to greenhouse warming

...rocess," said Mark Harmon, holder of the Richardson Chair in the OSU Department of Forest Ecosystems and Society. "That seems to make common sense and sounds great in theory, but when you actually go through the data it doesn't work." Using biofuels to produce energy does not completely offset the need ...

Manatees can probably hear which directions boats approach from

...form in their enclosure where they could listen to sounds played from one of four speakers arranged around t...g that the manatees' hearing was most sensitive to sounds ranging from 10 to 20kHz, while the animals' calls...2.5 to 6kHz, Colbert and David Mann designed three sounds ranging from 0.2 to 20kHz, 6 to 20kHz and 0.2 to 2...

Climate change could drive vast human migrations

...om 25 million to 50 million by 2010, to almost 700 million by 2050. "Climate is the envelope in which all of us lead our daily lives. This report sounds warning bells," said coauthor Alexander de Sherbinin, a geographer at CIESIN. "We usually categorize the poor as the ones who will suffer mostbut rich...

Scientists explain how 'death receptors' designed to kill our cells may make them stronger

...e, but they would also give doctors the ability to trigger cells to shift into "survival mode." "As far as names are concerned, nothing in biology sounds more intimidating than 'death receptors,'" said Gerald Weissmann, M.D., Editor-in-Chief of The FASEB Journal . "Fortunately for us, when scientists l...

UCLA scientists discover ultrasonic communication among frogs

...island of Borneo. Ultrasounds are high-pitched sounds more than 20 kilohertz (kHz) in frequency, which exceeds the upper limit of sounds detectable by humans and is far higher than the 5 ...pted to detect ultrasounds. The frogs can hear sounds up to 38 kilohertz, the highest frequency any amph...

Dolphins maintain round-the-clock visual vigilance

...seem to be able to remain continually vigilant for sounds for days on end. All of this made Ridgway and his ... 0.5 s beeps every 30 s. Ridgway explains that the sounds were low enough for the dolphins to barely notice ... heard the 1.5 s tone, even after listening to the sounds for 5 days without a break. Their auditory vigilan...

Fish may actually feel pain and react to it much like humans

...not get morphine experienced this painful, stressful event. Then two hours later, they turned that pain into fear like we do," Garner said. "To me, it sounds an awful lot like how we experience pain." The findings could raise questions about slaughter methods and how fish are handled in research. Garner ...

Some vocal-mimicking animals, particularly parrots, can move to a musical beat

...y, but need certain experiences or social motivation, according to Schachner. Schachner says that these birds do not seem to move in synchrony with sounds in the wild, and so the behavior could not have evolved as a result of direct natural selection. For this reason, in bird species this capacity must b...

Mites on hissing coackroach may benefit humans with allergies

...s long and 1 inch wide, and makes its characteristic hissing sound if it is squeezed or otherwise feels threatened. Its gentle nature, large size, odd sounds and low-maintenance care have made the species a popular educational tool and pet for years. When Benoit and colleagues discovered the molds on coc...

Laughing hyenas, wailing levees, the sound of cheese and blaring bagpipes

...revious work showing that women respond to looming sounds sooner than their typically larger, stronger male ...unterparts -- though both groups perceive receding sounds equally. Rhesus monkeys also spend less time looking at receding sounds than approaching sounds. "These reactions are infl...

Brain music

..., fatigue, and headaches stemming from stressful environments. The concept of Brain Music is to use the frequency, amplitude, and duration of musical sounds to move the brain from an anxious state to a more relaxed state. "Strain comes with an emergency response job, so we are interested in finding wa...

K-State using Second Life island to help high school students learn earth science

... A mysterious island that moves through time. Travelers in search of answers. It sounds something like the science fiction television show "Lost," but it also describes a new approach to teaching earth sciences to high school students. ...

Scaling the wall of deafness

...there is an abnormal development or wearing down of specialized sensory cells, called hair cells located in the inner ear. Responsible for translating sounds to electrical pulses that the brain can interpret, when we lose these cells, we lose our ability to hear. In the new study, developed with an inte...

Study compares sound from exploding volcanoes with jet engines

... eruptions shows an unexpected connection with jet engines. Researchers at Scripps Institution of Oceanography at UC San Diego speeded up the recorded sounds from two volcanoes and uncovered a noise very similar to typical jet engines. These new research findings provide scientists with a more useful probe ...

Intruder alert: Tel Aviv University's 'Smart Dew' will find you!

...tronic Ears, Noses, Skin and Eyes Unlike conventional alarm systems, each droplet of Smart Dew can be programmed to monitor a different condition. sounds could be picked up by a miniature microphone. The metal used in the construction of cars and tractors could be detected by a magnetic sensor. Smart De...

Prairie dog research promotes caring, conservation

...pecies depend upon, including insects, hawks, burrowing owls and snakes. Slobodchikoff also argues that the prairie dog's barks, yips and chirping sounds are really a sophisticated form of communication that contains a vocabulary of at least 100 words. "The little yips prairie dogs make contain a lo...

Musicians have biological advantage in identifying emotion in sound

... the link between emotion perception and musical experience. One of his recent studies indicated that musicians might even be able to sense emotion in sounds after hearing them for only 50 milliseconds. The 30 right-handed men and women with and without music training in the European Journal of Neurosci...

MIT: Using touch to help deaf people

...s associated with different sound frequencies. The MIT researchers are testing devices that have at least two vibration ranges, one for high-frequency sounds and one for low-frequency sounds. Using such handheld devices, deaf people can more easily follow conversations than with lip reading alone, which ...

Researchers capture wave of brain activity linked to anticipation

...iar course during the Olympics, or how a piano player knows to move fingers along the keyboard to hit the next correct key," Rauschecker says. This sounds simple, but it isn't, he says. "It is not trivial to store a temporal sequence in the brain, because the brain doesn't have any moving parts like a ta...

Predicting risk of stroke from one's genetic blueprint

... which would correlate and analyze the data and output an overall probability of stroke, based on the stroke-related SNPs in the patient's genome. "It sounds like magic," says Ramoni. "But it's just a piece of technology. It gives hope that we will be able to predict early on whether someone is at risk of g...

Plants are political hot potatoes

...o on. In principle, many of these applications could be both environmentally sustainable and economically viable: a winwin situation." But Dr Frow sounds a note of caution: despite the growing interest in using plants for new purposes, the amount of land available for plants to grow is finite. "This is ...

Behind closed eyes

...h at the Institute has now revealed details of that activity, explaining why, even though our sense centers are working, we don't experience sights or sounds when there's nothing coming in through our sensory organs. The previous studies of Prof. Rafael Malach and research student Yuval Nir of the Neuro...

Exercise after knee replacement critical

...he University of Colorado at Denver, and Drs. Leo Raisis, Alex Bodenstab, and William Newcomb of First State Orthopaedics in Newark, Delaware. "It sounds logical that exercises to strengthen your knee should be a component of your post-operative physical therapy after a total knee replacement, but it's ...

New computational technique allows comparison of whole genomes as easily as whole books

...enomics, Kim expects it will help in grouping and finding relationships among sets of other information, such as electronic information encoding text, sounds and images. It may also help in tracing human ancestry and disease demography using whole genome sequences, and in grouping of metagenomic data - the ...

Feeling your words: Hearing with your face

... New Haven, Conn. The movement of facial skin and muscles around the mouth plays an important role not only in the way the sounds of speech are made, but also in the way they are heard according to a study by scientists at Haskins Laboratories, a Yale-affiliated research laborato...

Mosquitoes create harmonic love song before mating, study finds

...ory, placed electrodes in the mosquitoes' auditory organ in their antennae during playback to measure physiological responses of the mosquitoes to the sounds of potential mates. The researchers hope that their work will provide new ways to better control of mosquito populations in places where yellow and d...

Orangutan's spontaneous whistling opens new chapter in study of evolution of speech

...explain documented between-population variation in sounds for wild orangutans," Wich said. "In addition, it ...t under voluntary control. Being able to learn new sounds and use these voluntarily are also two important a...ns and chimpanzees are capable of species-atypical sounds and vocalizations, but only under the strong influ...

American Library Association names NJIT prof’s Whale Music book a top ten

...play his bass clarinet while playing and recording interspecies duets with the melodic mammals. The corollary compact disc Whale Music featuring the sounds of beluga, killer and humpback whales can be heard at http://cdbaby.com/cd/davidrothenberg2 , iTunes or www.thousandmilesong.com . The musical ...

Shifts in soil bacterial populations linked to wetland restoration success

... bacterial diversity. But that's a good thing, say the study's authors, because it marks a return to the wetland soils' natural conditions. "It sounds counter-intuitive, but our study shows that in restored wetlands, decreased soil bacterial diversity represents a return to biological health," said W...

The 156th Acoustical Society of America Meeting, Nov. 10-14, Miami, Fla.

...s a highly endangered species of baleen whale with fewer than 400 individuals left in the North Atlantic (Figure 1). These whales produce a variety of sounds for communication, and the behavioral function of these sound types is an area of active research" http://www.acoustics.org/press/156th/parks.html . ...

Forced evolution: Can we mutate viruses to death?

... HOUSTON -- Nov. 10, 2008 -- It sounds like a science fiction movie: A killer contagion threatens the Earth, but scientists save the day with a designer drug that forces the virus to mutate...

Acoustical Meeting, Nov. 10-14, 2008 in Miami, Florida

...d the scientists wanted to determine why a Chinook sounds different than a Coho or Sockeye. Au's team used ... contribute effectively to creating natural speech sounds -- an understanding that can be useful to research...in background noise and to emotionally-significant sounds such as the cries of babies. Nina Kraus will desc...

Brain recognizes verbal 'oh dear' wave

...he 'f' in spoon To see how the brain reacts to these kinds of mistakes, Schiller and Ganushchak asked volunteers to indicate whether or not certain sounds were in the words matching different pictures. So, for example, when shown a picture of a spoon, the volunteer was required to indicate whether or not...
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