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Tag: "sound" at biology news

Prenatal Stress Keeps Infants, Toddlers up at Night, Study Says

...has not been disrupted. This could explain why sound sleep doesnt come easily to kids whose signaling systems may not be properly calibrated, OConnor said. However, more research is needed to monitor this signaling pathway more closely, watching for biological hints as to why sleep and behavioral distu...

St. Jude study solves mystery of mammalian ears

...tor in cochlea hair cells dominates the process of sound amplification in the mammalian ear, while movement...ver how specialized cells in the inner ear amplify sound in mammals appears to have been settled more in favor of bouncing cell bodies rather than vibrating,...

Massive herds of animals found to still exist in Southern Sudan

...ommunities and engage the private sector to employ sound environmental practices. “Humanitarian and development NGOs are swarming into southern Sudan,” said Fay. “With all the relief being poured into the region for development and the resource industries moving in, we could actually see this precious w...

Microbes at work cleaning up the environment

It may sound counterintuitive to use a microbial protein to improve water quality. But some bacteria are doing just that to protect themselves from potentially toxic nanoparticles in their own environments, and clean up crews of the future could potentially do t...

Gene responsible for common hearing loss identified for first time

... the growing bone in the middle ear interrupts the sound waves passing to the inner ear. While the causative factors remain unknown, now one of the genetic components has been identified, Ms Thys told the conference. “The gene in which the variant is located points to a pathway that contributes to the dise...

UI anthropologist, colleagues discover remains of earliest giant panda

Although it may sound like an oxymoron, a University of Iowa anthropologist and his colleagues report the first discovery of a skull from a "pygmy-sized" giant panda -- the earliest-known ancestor of the giant panda -- that lived in south China some two million years ago....

Mule deer moms rescue other fawns

... their own fawn was standing next to them safe and sound revealed they do not help other fawns because they...ving a rigid and aggressive response to the simple sound of a fawn distress call may ensure effective defence of a female's own offspring, even though this m...

Confirmed -- deforestation plays critical climate change role

...," Dr Canadell says. "This study ensures we have a sound scientific basis behind the consideration of deforestation reduction."...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...acoustical conditions in office cubicles" How can sound waves diagnose and monitor muscle activity" These...Muscles make noise. For example, you can hear the sound of the masseter muscle--a jaw muscle used in chewing food-by propping your head (ear down) in the pa...

Male owls pitch their hoots to advertise body weight to competitors

... males, probably indicating that they attempted to sound heavier when challenged by more threatening individuals. "The fact that owls are essentially active during the night puts a strong emphasis on acoustic communication as a means of assessment, both during male competition and during mate choice," ...

New success in engineering plant oils

...with increased saturated fatty acid levels may not sound like a boon to those conscious about consuming unsaturated fats, "the development of new plant seed oils has several potential biotechnological applications," said Brookhaven biochemist John Shanklin, lead author on the paper. For one thing, the n...

Scientists identify molecular cause for one form of deafness

...el displays. Within the cochlea of the inner ear, sound waves cause the basilar membrane to vibrate. These... a thousand times floppier, they cannot respond to sound in the same way. The rigidity of these bundles is essential for hearing." Wong and his co-authors ...

Study shows isolation of stem cells may lead to a treatment for hearing loss

...on by specific frequencies of sound. We hear this sound because this motion induces the hair cell to relea...ses along the auditory nerve to the brain. If the sound is too loud, the hair cells are damaged and no longer send signals to the brain. Severely damaged h...

Mutation improves memory, may lead to memory-enhancing pill

...ch they freeze in response to the "scary" place or sound 24 hr later. Importantly, the researchers also showed that treatment of animals with a small molecule that increases eIF2a's phosphorylation led to poorer performance on the memory tests. “These data strengthen the idea that eIF2a phosphorylati...

Male reindeer inflate a large air sac in the neck region to emit their hoarse rutting calls

... that a male reindeer's air sac, influencing vocal sound and neck contour, may contribute to his sexual prowess and reproductive success. The results of this research have recently been published in Journal of Anatomy. As in other species with harem-like mating systems, the voice organs of reindeer differ...

Research finds music training 'tunes' human auditory system

...nding has broad implications because it applies to sound encoding skills involved not only in music but als...ur study is the first to ask whether enhancing the sound environment -- in this case with musical training -- will positively affect the way an individual en...

Wired for sound: How the brain senses visual illusions

...second sound," said Mishra, adding that the second sound amplified the brain activity stimulated by the first sound. Perception of the second illusory flash was also marked by a rapid enhancement of processing in the auditory cortex of the brain. By observing the auditory boost, the researchers could pre...

Large size crucial for Amazon forest reserves

...ervation strategies result when policy is based on sound science. The results in this paper confirm the importance of this action and other, similar efforts to conserve forested regions. ...

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

...squito repellents (EMRs) claim that the high pitch sound they emit repels female mosquitoes, and therefore protects people in the vicinity from bites and disease. To test these claims a team of Cochrane Researchers conducted a systematic review looking for trials conducted with EMRs. They located ten fi...

Stem cell transplants explored at Stanford as a possible treatment for hearing loss

...these cells that convert the mechanical energy of sound into electrical impulses that are sent to the brain so that a chicken, a mouse or a human can hear. Chickens, like all birds, have the ability to spontaneously regenerate these hair cells, which explains why there are no deaf birds. "This is pr...

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