Tag: "sounds" at biology news
Hawaiian Whales Show 'No Overt Response' To Sounds Of ATOC Simulation
...vironmentalist groups expressed concern that ATOC sounds
could harm -- or even deafen -- whales and other ...er deep layer of water that catches and transmits sounds
much farther than shallower parts of the ocean. Sperm whales are known to frequent the deep sound ...
Human-Like Ability, Categorical Perception, Found In Insects
... 25 to 80 kHz (humans with good hearing can detect sounds
up to 20 kHz). Steering toward the low-frequency ...question: What is the cut-off line between "good" sounds
and "bad", and how does the insect decide? The study is reported in the journal Science,(Sept. 13, ...
How Birds Sing
...the most beautiful song ," admits Margoliash. "It sounds
like a squeaky door. But it's a wonderful system f...in cells of interest, and compared the signal with sounds
the birds made. The impulses in the RA coincided with individual notes, each lasting just a few hund...
Researcher Discovers Key Brain Center For Speech
...iny area seems tobe necessary for coordinating the sounds
Birds Deal With "Cocktail Party Effect"
...l even during the "dawn chorus," thecombination of sounds
heard in the forest during a springmorning, when a...dmarks. By learning howto arrange those sights and sounds
into an order, called a serialorder, animals and people are able to navigate theirenvironments. Fore...
SFSU Biologist Deciphers Desert Animals' Whistles And Drumbeats
...to different kinds of sounds. She played the taped sounds
of moderate and then rapid whistles, and found the animals headed for the burrows more quickly when they heard the rapid whistles. This spring, she returns to the plains of Uzbekistan to determine if gerbils produce different signals in the presence ...
Among Wrens, Moms Teach Daughters To Call, Dads Teach Sons, Study Reveals
...on birds with binoculars while tape recordingtheir sounds
on a cattle ranch south of Caracas, Venezuela, a ...ned UNC-CH ornithologist R. Haven Wiley, named the sounds
"WAY" calls twodecades ago because they brought to mind a nasally congested human asking "Whereare y...
Earlier Human Speech?
...t havehad the ability to produce the full range of sounds
that humans produce. Kay and his colleagues emphasized that further measurements must be madeto refine their data. For example, besides the hypoglossal nerve, the canalcarries two tiny arteries and a vein, and the Duke scientists are assumin...
New Airway's 'Smarts' Ensure That Patients Get Plenty Of Oxygen
... is correctly inserted in the trachea, and analarm sounds
if the tube shifts too much within the trachea atany time during treatment or transport to the hospital. "Some patients are intubated by anesthetists in the O.R.before an operation, and in this quiet, well-lit setting, faultyintubation is rare,"...
The Distinctive Sound Of Cholesterol
...xpensive diagnostic devices or by listening to the sounds
made by the blood. When the heart pumps blood, ve... a similar device could distinguish differences in sounds
produced by blood in patients with cholesterol problems. The system he developed was tested on patie...
Biggest Acoustics Meeting Ever
Exploring the world only for its sounds
may at first seem to be a limited endeavor, but in...onnections in the brain required to comprehend the sounds
of their native language by the timethey are a year old, even if they cannot yet vocalize their word...
Clusters, Computers And The Human Brain
...other task, the algorithm was asked to analyze the sounds
of the alphabet as pronounced by 300 people, with the sound of every person's voice represented as a combination of more than 600 acoustic parameters. Without being given any instructions other than the command to look for clusters, the algorithm cor...
Fish Love Songs/Whale Rhythms
... generatelong rhythmic patterns of sound, and some sounds
can travel hundreds of milesunderwater. Analyzing "the remarkable cadence" of these patterns, ChristopherClark of Cornell University (607-254-2408) will show that whales can retain arhythm even after minutes of silence (4aAB4). FOR ADDITIONAL INFOR...
'Auditory Scene Analysis' Helps Find Mates
...les overlap, the Cornell biologists observed, the sounds
form what is known as an acoustic beat. And because the tone of a midshipman's hum is so pure and simple, computer synthesizers can easily reproduce it. That's why the biologists were able to play disc jockey at a fish party, complete with underwat...
Bat Sonar Sharper Than Thought; Much Better Than Man-Made Gear
...ay the study authors. "Using the same sounds
as the bat, the best man-made sonar equipment can ...gh-frequency sound waves and registering returning sounds
- echoes -from surrounding objects ranging from buildings to bugs. Depending on itssize, an ...
Inbreeding Natural Among Trees But Not Without Costs, University Of Georgia Forestry Research Shows
...step in purging them from a breedingpopulation. It sounds
simple, but Bongarten said it's complicated by the factthat not all lethal genes cause death 100 percent of the time. In this study,the team found only one gene that always kills and six others, called partialsor sub-lethals, that sometimes kill but ...
At Night, Birds May Review The Songs They Learn During The Day
...rpreted when the listenersubconsciously mimics the sounds
they hear, so that regions associated withspeaking would be active during listening. If this theory were true, then the birds should show activity in the RA, acenter associated with singing, as they listen to songs while awake. Instead,this region ...
Sunscreen Ingredient Causes DNA Damage In Light
...n regarding thephotosensitizing properties of PBSA sounds
a cautionary note: it may be safer toreplace it with another ultraviolet filter that does not attack DNA." Davies says his methods for testing PBSA -- which are outlined in the ChemicalResearch in Toxicology paper, co-authored with Queen's University...
Estuaries Vital To The Productivity Of Southeastern U.S. Fisheries
...ake Bay and North Carolina's Pamlico and Albemarle sounds
are beingdegraded by nitrogen from agricultural operations, lawn fertilizers and sewage,the destruction of wetlands for construction projects and other causes. Excess nitrogen can cause microscopic plants to "bloom" explosively inestu...
Newly Discovered Viral Gateway Into Cells Could Play Role In Diagnosis And Treatment Of Leukemia, HIV And Other Viral Diseases
...e found the gene," said Tailor. While the process sounds
simple, successfully isolating receptor genes has, until recently, taken many years of painstaking work. But the method used by Tailor employs a retrovirus as a kind of Trojan horse. A retrovirus containing the susceptibility gene is used to infiltra...
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