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sounds in Biological News

Manatees can probably hear which directions boats approach from

... in their enclosure where they could listen to sounds played from one of four speakers arranged around ... that the manatees' hearing was most sensitive to sounds ranging from 10 to 20kHz, while the animals' ... to 6kHz, Colbert and David Mann designed three sounds ranging from 0.2 to 20kHz, 6 to 20kHz and 0.2 to ...

UCLA scientists discover ultrasonic communication among frogs

... 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 ... to detect ultrasounds. The frogs can hear sounds up to 38 kilohertz, the highest frequency any ...

Dolphins maintain round-the-clock visual vigilance

... 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 ...

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

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

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

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

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

... 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 ... background noise and to emotionally-significant sounds such as the cries of babies. Nina Kraus will ...

Cranking up the volume

... that this change in ocean acidity would allow sounds to travel up to 70 percent farther underwater. ... it causes groups of atoms to vibrate, absorbing sounds at specific frequencies. This involves a variety ... Thus, as the oceans become more acidic, sounds will travel farther underwater. According to ...

Sounding out heart problems automatically

... classify a much wider range of heart sounds than is possible even by the most skilled ... Decomposition (EMD). This method breaks down the sounds of each heart cycle into its component parts. ... network. These are trained with standardized sounds associated with a specific diagnosis. The team ...

Killer whales, blind bats, discriminating dolphins, mating birds

... June 25, 2008 -- Meek and mighty animal sounds are all around us. In a few weeks, some of the ... science devoted to such things as analyzing the sounds of animals near and far -- the laughing, whooping, and groaning sounds of hyenas, for instance, or the chirp of ...

Study links low-frequency hearing to shape of the cochlea

... shape of the cochlea enhances low-frequency sounds through an effect analogous to the well-known whispering gallery effect in which soft sounds that travel along curved walls in a large chamber ... elephants, which have a ratio of about nine, hear sounds as low as 20 Hz. The power of this approach is ...

Researchers to develop ocean sanctuary 'noise budget' to evaluate potential impact on marine mammals

... Massachusetts for the next 30 months, recording sounds from whales, fish, ships and other sources around ... mammal scientists will analyze the biological sounds to help develop a global monitoring network for ... and a project scientist. Its full of natural sounds and those from human activities, and there is ...

Hearing changes how we perceive gender

... scientific evidence supporting the idea that sounds can alter how masculine or feminine a person ... In the initial stage of auditory processing, sounds are decomposed into basic frequency components, ... look of masculinity or femininity, said Suzuki. sounds seem to influence visual gender in a much more ...

Baby talk: The roots of the early vocabulary in infants' learning from speech

... differences, but over time they lose this skill for differentiating sounds in languages other than their native tongue. For example, 6 month old ... has shown that during infancy, babies learn not only individual speech sounds but also the auditory forms of words; that is, babies are not only aware ...

Turtle doves commit adultery

... Such hybrids can also be dysfunctional, for example, because the sounds they make are a mixture of sounds from both parent species. Remarkably, the offspring resulting from a ...

Researchers study acoustic communication in deep-sea fish

... cause the muscle to grow," he said. According to Fine, fishes make sounds for different reasons, but the two most common types of sounds are made for courtship and agonistic behaviors. ...

Caltech neurobiologists discover individuals who 'hear' movement

... would have been less successful had I just generally asked, "Do you hear sounds when you see things move or flash?" because in the real environment, ... the synesthetes could name examples of daily visual events that caused sounds that they logically knew to be only in their minds, such as seeing a ...

What it's like to be a bat

... . "For decades it's been recognized that a bat's voice produces sounds that give the bat information about the location of objects," says Moss. ... the environment, while some blind humans produce tongue clicks to generate sounds for echolocation. Both bats and humans engage in so-called "motor ...

Female concave-eared frogs draw mates with ultrasonic calls

... her interest: She emits a high-pitched chirp that to the human ear sounds like that of a bird. This is one of several unusual frog-related ... hearing aid that boosts sound signals of interest embedded in other sounds in the immediate environment of the listener. ...

New whale detection buoys will help ships take the right way through marine habitat

... instrumented with an underwater microphoneor hydrophoneto carry underwater sounds to the surface via specially designed cable that WHOI technicians ... computers on the surface buoy, which continuously analyze underwater sounds to detect possible right whale calls. Every 20 minutes, these acoustic ...

Computer learns dogspeak

... to the computer, where they were digitalized and individual bark sounds were coded, classified and evaluated. In the first experiment looking ... use of advanced machine learning algorithms to classify and analyze animal sounds opens new perspectives for the understanding of animal communicationThe ...

Naming evolution's winners and losers

... 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 ...

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

... 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 ...

Climate change could drive vast human migrations

... 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 ...

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

... 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 ...

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

... 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

... 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 ...

Mites on hissing coackroach may benefit humans with allergies

... 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 ...

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 ...

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

... 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 ...

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!

... 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 ...

Prairie dog research promotes caring, conservation

... 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 ...

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 ...

MIT: Using touch to help deaf people

... 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

... 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 ...

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 ...

Plants are political hot potatoes

... 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

... 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 ...

Exercise after knee replacement critical

... 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 ...
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(Date:7/29/2014)... different types of cell, including sperm, bacteria and ... flagella. These protrusions, about one-hundredth of a millimetre ... through fluid. Similar, shorter structures called cilia are ... they perform roles such as moving liquids over ... remarkably versatile: they transport mucus and expel pathogens ...
(Date:7/28/2014)... 100 drugs already approved by the U.S. Food and ... the growth of certain bacterial pathogens inside human cells, ... spotted fever. The findings, published in mBio , ... Microbiology, demonstrate a new way of identifying non-antibiotic drugs ... , A handful of drugs on the list inhibit ...
(Date:7/28/2014)... Norwegian explorer Roald Amundsen reached the South Pole in ... arrived long before any human. , Using data from ... the Antarctic continent, including the South Pole, a group ... (DRI) in Reno, Nevada, created the most accurate and ... southernmost continent. The new record, described in an article ...
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(Date:7/29/2014)... Advertising claims for cosmetic procedures using stem cells ... safety and effectiveness, according to a review in the ... , the official medical journal of the ... cells offer tremendous potential, but the marketplace is saturated ... patients at risk," write Dr Michael T. Longaker of ...
(Date:7/29/2014)... According to a July 22, 2014 ... “From Kim’s Butt to Angelina’s Lips: The Plastic Surgery ... the celebrity feature most requested by women seeking cosmetic ... Jennifer Lawrence’s nose, and Angelina Jolie’s ... data collected by an online community focused on plastic ...
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(Date:7/29/2014)... 2014 Avenidas is always looking ... Once again, the non-profit agency is doing just that with ... seniors. , This event gives seniors the opportunity to learn ... There will be a variety of fun activities, including a ... demonstrations and artists. In addition, there will be food tastings, ...
(Date:7/29/2014)... Virginia Commonwealth University School of Medicine researchers have ... against the debilitating and potentially deadly tick-transmitted disease, ... several years, experts have seen a steady rise ... tick-transmitted bacterial pathogens making the need for ... knowing what to target to prevent disease, and ...
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