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Tag: "temporal" at biology news

The circadian clock: Understanding nature's timepiece

...ave their own environmental niches and also unique temporal niches, as any cat owner can tell you. ...

Changing ecosystems throw scientists mega-challenges

...vities and natural cycles at different spatial and temporal scales." The report encourages NSF to maintain its foundation-wide emphasis on investigations of coupled human and natural systems, as currently embodied in the Biocomplexity in the Environment program, and discusses related goals. "Environmental r...

Innovative collaboration brings Arctic science into the classroom

...uable, as her high frequency samples have captured temporal variability that otherwise would have been missed. Because of Anya's interest, in May and June 2004, Holmes, Clapp, and Alexander Zhulidov, a Russian scientist who had been on the Lena trip, visited her school in Zhigansk, Siberia, to talk about sci...

Precise Timing Enabled Pig-to-rat Transplants To Cure Diabetes

...chool of Medicine in St. Louis have learned that a temporal "window of opportunity" was critical to their earlier successes in treating diabetic rats with embryonic pig tissues. In those experiments, published in 2004, researchers were surprised to find that they didn't have to give anti-rejection drugs to d...

Lipids get new comprehensive classification system

...wn lipids and identify new ones, to quantitate the temporal and spatial changes in lipids that occur with cellular metabolism, and to develop bioinformatics approaches that establish dynamic lipid networks. In order to coordinate their efforts with those of other groups, such as the Lipid Bank in Japan, the E...

A whole lot of shaking goin' on triggers early hatching in red-eyed tree frogs

...nd vibrations caused by snakes are elements of the temporal pattern," she says. "Snake bites, in general, last... instances, therefore, provided more evidence that temporal patterns serve as an important cue for the frogs. Warkentin created similar temporal patterns out o...

ORNL, UC Berkeley unravel real-world clues to Earth's mysteries

...work remains to more fully explore the spatial and temporal aspects of how such a community grows, ages and adapts to its environment. ...

Study shows humans have ability to track odors, much like bloodhounds

...g successful localization. This area, the superior temporal gyrus, is also involved in the localization of sou...and elegant convergence of this area, the superior temporal gyrus, that appears to transform non-spatial information into spatial information," he said. "Togeth...

'Punctuated' evolution in the human genome

...icative activity. This is the first time that such temporal bias has been documented for DNA duplications, and...n conformation. "Other regions may show different temporal biases," explains Eichler. "The important implication here is that episodic bursts of activity chall...

Scavenger cells could be key to treating HIV-related dementia

...acrophages in the brain continuously travel to the temporal lobe, a part of the brain Alzheimer's disease ofte...e the virus mutates nearly 100 times faster in the temporal lobe than other parts of the brain, attacking macrophages migrate there in a constant stream, causin...

Brain networks change according to cognitive task

... active for each of the studied tasks: the lateral temporal cortex (LTC) for the rhyming task and the intraparietal sulcus (IPS) for the spelling task. In addition to the task-specific regions, the inferior frontal gyrus (IFG) and the fusiform gyrus (FG) were engaged by both tasks. Dynamic Causal Modeling, t...

What Makes The Brain Tick, Tick, Tick: Researchers Gaining New Insights Into Brain's Internal Clock

..."Interval timing is necessary for us to understand temporal order of events, for example when carrying on a co...at time isn't directly perceived, but that we make temporal discriminations relative to memories of previous durations. Such features have made the machinery of...

Male elephants woo females with precise chemistry

...harged during musth by male Asian elephants from a temporal gland located between the eye and ear, comes in two forms, each representing one half of the enantiomer pair and identified as either "plus" or "minus." The OHSU and New Zealand team showed that the enantiomers of frontalin are released in the eleph...

Clocking in Pillow Time without the Pillow

...rontal cortex, the dorsal striatum, and the medial temporal lobe. However, when sleep-deprived monkeys took the drug, they showed heightened glucose metabolism in these same brain regions. The researchers compared these results to suggest a biological basis for the drug's effects. Previous studies have shown...

Noise And Delays Explain Why Some Genes Oscillate In Activity

...rontal cortex, the dorsal striatum, and the medial temporal lobe. However, when sleep-deprived monkeys took the drug, they showed heightened glucose metabolism in these same brain regions. The researchers compared these results to suggest a biological basis for the drug's effects. Previous studies have shown...

A resetting signal keeps circadian rhythm on track in Drosophila fruit flies

...nt study greatly advanced the understanding of how temporal coherence between these two cell groups, and between their behavioral outputs, is achieved. ...

Carnegie Mellon U. transforms DNA microarrays with standard Internet communications tool

...me series experiment) against the "summary" of the temporal response. If the two sets of results are equal, then what is captured by the DNA microarray time series is real. If the time series results produce a lower value than the microarray summary, the protocol indicates that the researchers have missed a g...

Study ties 'new' cell-death mechanism to developmental and degenerative brain disorders

...er's disease takes place in the hippocampus of the temporal lobe and that of Parkinson's disease occurs in the substantia nigra of the brain stem. Pulst said the new findings on neurodegeneration do not necessarily supersede the prevailing hypothesis of defective proteins. In fact, the two may be linked. "...

Carnegie Mellon scientists show brain uses optimal code for sound

... components are represented only in terms of their temporal relationship with each other. That's because the intensity and basic frequency of a given feature are essentially "kernalized," or compressed mathematically, into a single spike. This is similar to a player piano roll that can reproduce any song by r...

U of MN researchers develop way to visualize synchronized interactions of nerve cells in the brain

...cephalography (MEG) to record, with 1- millisecond temporal resolution, tiny magnetic fields from the brain during a short period of time. They studied this interaction in research subjects who looked at a spot of light. Georgopoulos used MEG data from 248 sensors to detect the changing interactions over t...

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