Tag: "cue" at biology news
Tropical birds sensitive to environmental cues that can be impacted by global warming
... shown that testosterone is the main physiological cue
regulating seasonal changes in the neural song-con...tropical birds to sing, but that the environmental cue
is different," Moore said. The scientists wanted to determine whether "seasonal changes in brain str...
Brain region learns to anticipate risk, provides early warnings. suggests new study in Science
...iment. "We didn't tell them that the white or blue cue
offered any clue about their likelihood of making an error on any particular trial, but by the end of the session, some of them had begun to figure it out, at least on a subconscious level," Brown said. Even among those who remained relatively unawar...
Light therapy may combat fungal infections, new evidence suggests
...body may be an important and previously overlooked cue
that sparks infection, the researchers said. The discovery in the human pathogen Cryptococcus neoformans further suggests that light therapy, in combination with anti-fungal drug treatments, might offer an effective method to combat a variety of fung...
The evolution of phenotypic polymorphism
...idual could use his/her genotype as an informative cue
when "deciding" which phenotype to develop. This i...his is the same as using some purely environmental cue
signaling the presence of predators to infer the risk of predation. The evolutionary theory develope...
A whole lot of shaking goin' on triggers early hatching in red-eyed tree frogs
...dence that temporal patterns serve as an important cue
for the frogs. Warkentin created similar temporal patterns out of computer-generated nonspecific sound, or "white noise." Again, the snake-like pattern of white noise caused more eggs to hatch prematurely than did the rain-like white noise. "These ...
Deep thoughts of a birdbrain
.... A delay period followed these cues. If a forget cue
was presented, the trial ended after the delay, and no memory test was given. If the remember cue
was presented, the birds were given a memory test in which they saw two stimuli after the delay; if ...
Unrestrained retina too much of a good thing
.... Unless these embryonic cells are given the right cue
at the right time, they mistakenly form a huge eye that consists entirely of retina and lacks the optic nerve. The discovery that the retina is the 'default' setting for development in the embryonic eye comes from research by neurobiologist Greg Lemk...
Viagra interferes with plant sexual reproduction
...events and in plants could be acting as a guidance cue
for the pollen tube to an unfertilised ovule", Prado explains, "It could work as a safe guard mechanism to block polyspermy, i.e. dual fertilization". Prado's research was the first to demonstrate a role of NO in pollen tube biology, and further work...
New clue to cocaine addicts' quirky behavior
... The rats were taught that in response to a visual cue
they should turn left or right toward one arm or t...e strategies when they were required to ignore the cue
and always make a left or right turn to receive the reward. "Thus, although abnormally induced LTP b...
Looks matter to female barn swallows
...ity to raise young, Safran speculates. The actual cue
that female barn swallows use to assess potential mates differ according to regional tastes. For example, classic studies have shown that in the very closely related European barn swallow ( H. rustica rustica) , males with long tail feathers attract...
Leading lampreys to slaughter: Pheromone for scourge of Great Lakes identified
...eams, where they might be captured. In theory, the cue
could attract lampreys from many locations for miles around and could work for as long as several months. The work was supported by GLFC, the University of Minnesota Agricultural Experiment Station and the National Institutes of Health....
Your brain cells may 'know' more than you let on by your behavior
... the one that has been associated with the initial cue
(i.e. umbrella). The reward is a sip of their favo...ve represents the memory of the correct pairing of cue
and associated symbol. Surprisingly, these brain cells kept firing even when the monkeys picked the ...
Evolutionary shifts in olfactory sensitivities in fruit flies
...their new work, the researchers show that the main cue
used by D. sechellia when locating morinda fruit is methyl hexanoate (MeHex), which possesses a pineapple-like odor. The researchers found that olfactory hairs (sensilla) on the antenna that house receptor neurons specific to the MeHex odor have beco...
Like their pregnant mates, primate dads-to-be pack on pounds
...arins normally gestate for six. "The males somehow cue
in to the cascade of hormonal changes going on in their pregnant mates," says Ziegler. That cue
triggers changes in their own reproductive hormones. Rising levels of the lactation-inducing hormone...
Secrets of the sea yield stronger artificial bone
...ke Tomsia have developed materials that take their cue
from nature. In this case, Tomsia and colleagues turned to the ocean. When seawater freezes, crystals of pure ice form layers, while impurities such as salt and microorganisms are expelled from the forming ice and entrapped in channels between the ic...
American College of Physicians: The healthcare response to pandemic influenza/avian flu
...nts, a Q & A session will begin. The operator will cue
all journalists at that time to present questions. Have questions about the conference or need more information? Contact: Lynda Teer, 215-351-2655 or 800- 523-1546, ext. 2655 firstname.lastname@example.org ; or email@example.com ACP's Annual Sessio...
Stress-induced levels of corticotropin-releasing factor responsible for binge behaviour
...ward a piece of sugar - whenever presented with a cue
that had previously been associated with that rewa...bserved the behaviour of the rats in response to a cue
a 30-second long tone- that had previously been associated with the release of a reward, in the for...
Animal brains 'hard-wired' to recognize predator's foot movements, Queen's study suggests
... foot movement is an independent, important visual cue
that another animal is nearby. "The observation that it is relatively easy to get close to wild animals in a car, a canoe, or a similar vehicle might be due to the absence of the typical movement of the feet," says Dr. Troje. Similarly, the creeping...
Recent, rapid climate change is driving evolution of animal species
... are using shorter, more "southern" day lengths to cue
the initiation of larval dormancy. In contrast, the authors write that no studies have found genetic changes in populations relating to the generally expected direct effects of increasing temperature. There are no examples in animal populations of g...
News tips from the Journal of Neuroscience
...on a video screen. In each trial, a complex visual cue
accompanied the goals. On disappearance of the cue...ained to select a new spatial goal when the visual cue
changed and to maintain the present goal when the visual cue
was repeated. The authors found that di...
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