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Tag: "spatial" at biology news

Recreating 'Flowers for Algernon' with a happy ending

... mice. Second, he trained the mice to memorize spatial clues in order to navigate a water maze and swim to a platform. The normal animals learned to find the platform in seven days; the NF1 mice took 10. After receiving statins, the NF1 mice outraced the normal mice. Third, Lee tested coordinatio...

Team led by Carnegie Mellon University scientist finds first evidence of a living memory trace

...on and inhibition within glomeruli. He retrieved a spatial pattern of synchronized, correlated activity ?the memory trace ?from what appeared to be random fluctuations of neural activity. "The trace is like a fingerprint that disappears over time. It's strongest after the honeybee's initial exposure to an o...

Gene controls whether fear is a factor

...depleted of stathmin perform normally in a test of spatial learning. Fear reactions represent a spectrum of ... normally on a water maze test, an indication that spatial learning and memory--controlled outside of the amygdala--were unaltered. "The findings provide gene...

Bigger brain size matters for intellectual ability

...th brain size in women, but less strongly. In men, spatial ability was not related to overall brain size. The...ts suggest that women may use verbal strategies in spatial thinking, but that in men, verbal and spatial thinking are more distinct. It may be that the size ...

New neurons take baby steps in the adult brain

...rus, which is thought to be involved in memory and spatial reasoning, or navigation. It is one of the few parts of the brain where new neurons form throughout life and are integrated into the existing network of cells. The researchers also figured out why the mouse's new neurons were excited by GABA -- they...

Breath of the dragon: ERS-2 and Envisat reveal impact of economic growth on China's air quality

..., SCIAMACHY possesses superior performance, with a spatial resolution of 60 x 30 kilometres compared to 320 x 40 km for its predecessor. SCIAMACHY also observes the atmosphere in two different ways - downwards or nadir-sounding' as well as 'limb-sounding' along the direction of flight - and with a larger s...

Prenatal exposure to marine toxin causes lasting damage

...oses of the marine toxin, including impairments to spatial memory. To explore the toxin's effects during de... female rats in their ability to complete tasks of spatial memory, the researchers found. Previous research has shown that males normally outperform females on...

Study provides insight into cellular defenses against genetic mutation

...-prime end) of an exon-exon junction. If these spatial requirements are met, CBP80 interacts with human up-frameshift proteins, factors that come together at exon-exon junction complexes to drive NMD review. The three up-frameshift proteins work together to trigger decay once an early nonsense codon is d...

Researchers use brain scans to predict behavior

...cAvoy M, Shulman GL, Corbetta M. Brain signals for spatial attention predict performance in a motion discrimination task. Proceedings of the National Academy of the Sciences, Dec. 6, 2005. ...

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

...an figuring out, for example, neural processing of spatial position and movement, they said. Said Buhusi, "I would argue that time is more fundamental than space, because one can just close one's eyes and relive memories, going back in time; or prospectively go forward in time to predict something, without ...

NASA satellite data provides rapid analysis of Amazon deforestation

... land cover. Unlike MODIS data, analyses of high spatial resolution data demand extensive storage and processing requirements. And, in tropical forest regions, image quality is often reduced by cloud cover and infrequent coverage of high-resolution images. But MODIS obtains images of the Amazon up to four ...

Study charts origins of fear

...to avoid shocks. "We tested the animals using both spatial and auditory cues," Zhuo says. "In one experiment, the mice received small shocks when entering a chamber and they developed fear memory. In another experiment, we used sound tones to be associated with shocks. When NR2B was blocked, they no longer a...

Retina adapts to seek the unexpected, ignore the commonplace

...e to the brain. These cells generally record local spatial differences and changes over time rather than faithful renditions of momentary scenes. Scientists had interpreted this as a form of predictive coding, a strategy shaped by the forces of evolution in adaptation to the average image structure of natura...

Carnegie Mellon cyLab researchers work to develop new red tide monitoring

...ts. "Spatiotemporal data mining extracts changing spatial patterns from continuous data flow. It is a rapidly growing field, which includes inverse physics, machine learning and human-computer interaction," Cai said. ...

U of MN researchers reverse memory loss in mice

...ion of the disease. The study measured the mice's spatial memory through a water maze--a pool of water with a submerged platform. The use of this maze taps into the hippocampus, an area of the brain important in Alzheimer's disease research. Since mice are not fond of water, they will swim to find the plat...

Six previously blind patients detect light, motion, identify objects with retinal prostheses

...ld discriminate simple shapes-i.e., figure out the spatial orientation of a bar or the capital letter L-with 61 to 80 percent accuracy. The researchers also noted that when there is no electricity running through the device, the subjects do not show any improvement in perceptual acuity, "suggesting that ele...

New tool reveals secrets of migrating cells

...me anybody has quantitated four-dimensional data - spatial and time data - to get a picture of long-range cell migrations through tissue," said immunologist Ellen Robey, professor of immunology at the University of California, Berkeley. "The ability to directly visualize cells in living tissues has changed t...

Bad aftertaste? New sensory on/off switch may 'cure' bane of artificial sweetener search

...rom the Brewer group. Miao will present "Dictating spatial organization of acceptor and donor orbitals in mixed-metal:mixed-ligand supramolecular complexes" (INOR 392), co-authored by Brewer. And Jeletic will present "Osmium(II) chromophores containing 2,2':6',2"-terpyridine and 2,3-bis(2-pyridyl)pyrazine an...

Virginia Tech group adds tools to DNA-targeted anti-cancer drugs

...rom the Brewer group. Miao will present "Dictating spatial organization of acceptor and donor orbitals in mixed-metal:mixed-ligand supramolecular complexes" (INOR 392), co-authored by Brewer. And Jeletic will present "Osmium(II) chromophores containing 2,2':6',2"-terpyridine and 2,3-bis(2-pyridyl)pyrazine an...

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

...t is, keep their head motionless and say where the spatial source of an odor is," said study coauthor Noam So... appears to transform non-spatial information into spatial information," he said. "Together, these results are the first description of the mammalian brain mec...

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