Tag: "cue" at biology news
Environment influences learning: U of T study
...tal cues can also trigger the memory of odour as a cue
for starvation," said Law. "This is something people intuitively said was important. This is an important bridge between psychology and neurobiology. Affecting an environment affects your ability to learn." The researchers have also identified a...
Brightness discrimination in the dog
...s discrimination. Brightness would be an important cue
for such animals. Like dogs, says Griebel, sea lions, a species of manatee, and the horse--all arrhythmic animals--are quite inferior to humans in the ability to discriminate brightness. Humans are diurnal animals--active primarily during daylight. ...
Memory fails you after severe stress
...r cent from sequential photos- though the clothing cue
boosted correct identification to 66 per cent (International Journal of Law and Psychiatry, vol 27, p 265). Thirty people got the gender wrong, and those subjected to physical threats were the worst at recognising their interrogator. Elizabeth Loftu...
Powerful machines are coming in small packages
...nergy and Chemical Systems." They have taken their cue
from the technology known as "MEMS" (Microelectromechanical Systems), which involves the flow of electricity rather than fluids through micromechanical structures. The carbon-based arrays of MEMs microbatteries made by Marc Madou of the University of...
Researchers find new form of hormone that helps songbirds reproduce
...rs. In either case, the brain detects an external cue
birdsong that triggers a physical or behavioral response, possibly both. Just how the responses are transmitted through the nervous system is unknown, Wingfield said. But finding a third form of GnRH in areas of the brain that produce and process b...
Innovative shuttle bus debuts in Washington, D.C.
...ellowstone and Glacier National Parks. Taking its cue
from the 1930s-vintage White Motor Company vehicles, these modern vehicles feature the roll-back top, rounded back and excellent visibility that characterized the historic buses. Their modern amenities include a sophisticated suspension system for a ...
Fruit fly pheromone receptor first ever discovered linked to specific sexual behavior
...they apparently fail to detect the proper chemical cue
from females. The sexually aberrant flies otherwis...n males apparently failed to receive the pheromone cue
from females. Flies lacking only Gr68a showed the same dysfunction as those lacking the neurons comp...
Male baboons recognize and care for their own offspring
... we believe, is that they attempted to isolate one cue
that the male used," said Alberts. "But we are led... with the female. "Even humans don't just use one cue
to identify their offspring," said Alberts. "We use all the information we have available to us." A...
Molecules discovered that extend life in yeast, human cells
...hich increase in response to stressful conditions, cue
organisms to prepare for impending harsh conditions by switching to a more beneficial survival program. They call their hypothesis "xenohormesis." The most potent molecule in the study, resveratrol, helped yeast cells live as much as 60 to 80 percen...
Sleep deprivation within five hours of learning impairs memory consolidation in mice
...r of seconds -- when exposed 24 hours later to the cue
associated with the shock. Even when deprived of sleep, mice exposed to the audible tone remained fearful the following day. But mice that had learned to associate a general physical environment with administration of an electric shock were less l...
A new discovery by scientists at the MNI may provide insights into Multiple Sclerosis
...researchers showed that netrin acts as a repellent cue
for migrating oligodendrocytes- directing them to move away from sources of netrin. "This result was very exciting for us because netrins are ancient signposts in developing nervous systems," says Dr. Kennedy. "They've been pointing axons in the rig...
'Work stinks': It's more than just a slogan among ants, researchers find
...ld this slight difference in body chemistry be the cue
that distinguishes patrollers from nest workers? To find out, Greene and Gordon launched a two-year experiment designed to mimic forager-patroller interactions at nine mature ant colonies in Arizona. The scientists wanted to see if they could trick f...
UNC scientists find important new clue to puzzle of addictive behavior
...ls jumped in trained rats in response to the sound cue
even when researchers turned the intravenous drug pump off so that cocaine was withheld. "All that was known before was that dopamine would increase in rats' brains a few minutes after they got cocaine but there were no specifics to be able to relate...
Coots can count
...ng that they'll keep laying eggs until an external cue
tells them they're done. Speculation about the nature of the cue
has long favored the sense of touch--when the female feels like she's sitting on the right number of...
Scientist pursues role of possible new cell type
...se cells get ahead of the nerves, so they may also cue
nerves to make the proper connections with target tissue. "That is not to say that we already know at this point that they make every cell type in the body, because we don't. But the four tissues of the body are believed to come from different source...
Molecule helps pupils respond to light
...an clock resides in the brain, and sunlight is the cue
that resets this clock daily. Improved understanding of the circadian system could lead to better treatments for jet lag and depression, and may help optimize drug treatments affected by changes in hormone levels. Although earlier studies had indicat...
Infection with second strain of HIV compromises treatment
...ategies to develop HIV vaccines may need to take a cue
from influenza, where efforts to develop new vaccines are ongoing because new strains of the virus are emerging continually. "On the other hand," said Walker, "we're learning an incredible amount about the immune system and how it deals with chronic ...
Brain's method of creating mental images differs with the source of cues received
...er, the brain reverts to information from a single cue
- from the eyes, for instance - to make a judgment...ile a third appeared more slanted according to one cue
and less slanted according to the other. To manipulate the sensory cues, the researchers used force...
Scientists produce the script for life
... these cellular players interact, communicate, and cue
each other. In healthy cells, genes and the protei...read a cell's script and perform as lead actors to cue
the production of necessary proteins (including the transcription factors themselves), by binding to...
Why the hammerhead shark's head is in the shape it's in
...he shark to start to search for food, an olfactory cue
(squid rinse) was introduced to the pen via the odor delivery tube. During each trial, only one of the four dipoles on the acrylic plate was active at any given time while the other three served as controls. When the shark detected the odor and began...
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