Tag: "pitch" at biology news
Acoustics meeting in San Diego
...mple of the difference between normal stress and a pitch
accent can be seen in the sentence, "The boy found...llar" receives a greater degree of stress, i.e., a pitch
accent, than that in "found." Confirmed in three individuals, the tendency of pitch-accented syllabl...
UF scientist: 'Brain' in a dish acts as autopilot, living computer
...lthough the brain currently is able to control the pitch
and roll of the simulated aircraft in weather conditions ranging from blue skies to stormy, hurricane-force winds, the underlying goal is a more fundamental understanding of how neurons interact as a network, DeMarse said. "There's a lot of data ou...
Three years of Proba, the 'smart' satellite that runs itself
...Proba is maneuverable enough to perform controlled pitch
and roll. That combined ability to retrieve hyperspectral and multi-angular data makes it especially useful for the study of land vegetation cover. It is also useful for studying the atmosphere and bodies of water. Around 60 scientific teams worldwi...
Bird brains show how trial and error may contribute to learning
...show up a few notes later as a change in volume or pitch
at a particular time in the song. The variations ...note in different directions, one area raising the pitch
of a certain note and another area lowering its frequency. The moment-by-moment influence of this br...
New insight into brain and speech promises help for learning disabilities
...ic aspects of speech, such as intonation, emotion, pitch
and inflection) appears normal. "What's compelling is that we can actually see the neural response from the brainstem to a given acoustic signal," says Kraus. And they can see it both in terms of the nonlinguistic aspects and linguistic characterist...
Scientists journey to southern Africa to unravel the secret world of elephant communication
...ts emit a variety of infrasounds--calls too low in pitch
to be heard by most humans. In 1989, Payne and her colleagues conducted a landmark experiment at a waterhole in Etosha demonstrating that these powerful infrasonic rumbles contain specific messages that can be heard and understood by other elephants ...
Research shows where brain interprets 'pitch'
...ons of sounds we identify as harmony. As a result, pitch
gives meaning to the patterns, tones and emotional...dy or conversation is not as essential to monkeys, pitch
perception is crucial for nonhuman primates to interpret the source and meaning of prey and predator...
Experiencing the world through the neurons of Math1
...you are in a darkened Carnegie Hall. Although it's pitch
black, you know you are getting closer to the stage as the music gets louder. If you have been there before, you have a sense of the location of the seats and aisles. You remain upright because you somehow know where your legs, arms and feet are. You...
Scientists discover secret behind human red blood cell's amazing flexibility
... the red blood cell and no more than 18 degrees of pitch
relative to the membrane in most cases. "Our model is the first to come close to duplicating the 3-D behavior that is observed in nature," said Skelton. The modeling suggests that the more a red blood cell is mechanically deformed, the more likely it...
Mice have a gift for song
... low, intermittent whistles. The other dropped the pitch
to an audible level without interfering with the t...tch). The authors identified discrete clusters of pitch
changes by analyzing a set of 750 syllables produced by one mouse in a single 210-second trial and d...
Bird calls may have meaning
...ering. "We speculate that this happens because the pitch
may be related to size, so the chickadee thinks, 'wow, that bird sounds big,' and they stay away from it," says Sturdy, from the Faculty of Science. "The first thing birds use to identify vocalizations is the frequency range. Different birds use diff...
APS physics tip sheet #57
... location of a buried pipe the rising and falling pitch
of the metal detector results because the hidden metal changes the way the detector circuit reacts. Conventional optical microscopy, on the other hand, is more like radar, which would locate a buried pipe by bouncing radio waves off of it. The micros...
Bats use touch receptors on wings to fly, catch prey, study finds
...le to fly and turn effectively, but they tended to pitch
forward because they couldn't control their in-flight balance. Zook's research also points to the importance of a second type of receptor cell in the membranous part of bats' wings. Nerve recordings revealed that these receptors respond when the memb...
Improved speech without vocal cords
...then their voice and enable it to achieve a female pitch
again. However, various practical problems need to... voice. Female patients in particular find the low pitch
troublesome. Moreover, if the uppermost sphincter of the oesophagus is too weak, the voice is not st...
Born with a love of speech
...hey also contain a fundamental frequency the core pitch
of a voice, such as baritone or soprano, that helps us clue in to the identity of a voice. These non-speech stimuli were developed by Drs. Sonya Bird and Guy Carden in the Department of Linguistics and Dr. Janet Werker in the Department of Psychology...
Winging it bird watching with a difference
...ve proved successful. "We can measure tailspread, pitch
angle and bank angle from the onboard video directly",says Taylor. "The plan is to relate these measurable control inputs tothe body motion of the bird, which we can quantify using the motionmeasurement unit."...
Flying tip of bees: Leave your legs dangling!
...ster. When orchid bees extend their hind-legs they pitch
forward to achieve maximal speed, and the legs pro...ructure (like the orchid bee legs) to control both pitch
and roll", speculates Dr Combes. The researchers perform their experiments by encouraging the bees t...
The urban evolution lab
...ands showed that urban great tits sing at a higher pitch
than their country cousins so that their songs stand out better against the city noise, which tends to be at lower frequency. Slabbekoorn is now doing further experiments to see whether individual tits can learn this response."Most of these species h...
Study shows hope for ridding lakes of clawed invader
...some degree sunfish - bluegills and pumpkinseeds - pitch
in by eating the smallest crayfish. The Wisconsin DNR, by manipulating the bag and size limits for anglers fishing Sparkling Lake, has helped establish an optimal population of the fish that routinely dine on the crayfish. The trapping on Sparkling...
How the brain keeps emotions at bay
... a salesman under pressure delivering an important pitch
to a client. Researchers have now discovered that the brain is able to prevent emotions from interfering with mental functioning by having a specific "executive processing" area of the cortex inhibit activity of the emotion-processing region. The ...