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Tag: "spatial" at biology news

CSIRO scientists join fight to save 'Tassie devil'

...a geographical information system (GIS) to map the spatial and temporal distribution of the disease across Ta... map showing the spread of DFTD over time and some spatial statistics correlating the frequency of devils and diseased individuals with different landscapes or...

Statin treatment improves spatial memory in mouse models of Alzheimer's

...ring cholesterol in humans, significantly improved spatial memory - how to navigate a water maze - in mice ge...an important role in statin-induced improvement of spatial reference memory. The transgenic mice used in the study are homozygous for the gene for beta amyl...

Ecology in an era of globalization

... "Assessing invasive alien species across multiple spatial scales: working globally and locally," and "Cascading events in linked ecological and socioeconomic systems....

Mutation improves memory, may lead to memory-enhancing pill

...phorylated eIF2a and showed an improved talent for spatial learning in a water maze test. In the test, the mice were trained to swim to a hidden platform. After several days of training, the altered mice were able to find the platform significantly faster than normal mice could, they reported. "For exa...

Action video games sharpen vision 20 percent

...ours, players showed a substantial increase in the spatial resolution of their vision, meaning they could see figures like those on an eye chart more clearly, even when other symbols crowded in." Bavelier and graduate student Shawn Green tested college students who had played few, if any, video games in th...

Imaging pinpoints brain regions that 'see the future'

..., patterns of activity suggest that the visual and spatial context for our imagined future often is pieced together using our past experiences, including memories of specific body movements and visual perspective changes ?data stored as we navigated through similar settings in the past. These findings, Mc...

Lithium builds gray matter in bipolar brains, UCLA study shows

... differences in cortical anatomy at a much greater spatial resolution. In this study, Bearden and colleag...treated ?and 28 healthy control subjects. Detailed spatial analyses of gray matter distribution were conducted by measuring local volumes of gray matter at tho...

University of Alberta researchers unravel intricate animal patterns

..."But until now, the connection between the complex spatial group patterns that we can see in nature and the different ways animals communicate, has not been stated explicitly." For decades people have puzzled about how animals—fish schools, locust swarms, large flocks of birds--form large complex dynamica...

Homing pigeons get their bearings from their beaks

...a complex three-dimensional pattern with different spatial orientation designed to analyze the three components of the magnetic field vector separately. They react to the Earth’s external magnetic field in a very sensitive and specific manner, thus acting as a three-axis magnetometer. The study suggests ...

Tracing broken wiring in stroke patients

...ain regions. By performing FC MRI in patients with spatial neglect, the authors identified regions of the bra...w insights into how this disruption contributes to spatial neglect. Particularly important was that the FC MRI studies showed that the lower the functional ...

Genes and genius: Researchers confirm association between gene and intelligence

...or coordination, logical and sequential reasoning, spatial perception and abstract problem solving skills. When people had more than one positive variation in the gene, the improvements in performance IQ were cumulative. The study's findings are available online in Behavioral Genetics and will appear in an u...

Cancer cells forming blood vessels send their copper to the edge

...s obtained images displaying the concentration and spatial distribution of many elements, including phosphorous, sulfur, iron, copper and zinc. Overlaying these elemental maps onto optical images of the cells, Finney and her colleagues then correlated elemental content with cellular structures. "Our findi...

Road-crossing in chimpanzees: A risky business

...ce the risks of predatory attacks through adaptive spatial patterning, moving toward the front of the group when traveling toward potentially unsafe areas, such as waterholes, and bringing up the rear when retreating, but comparable data on great-ape progression orders have been lacking. Crossing of man-made...

Robotic whiskers can sense three-dimensional environment

...ker base can be used to generate three-dimensional spatial representations of the environment," said Hartmann. "We used this principle to make arrays of robotic whiskers that in many respects closely replicate rat whiskers." The technology, she said, could be used to extract the three-dimensional features of...

Train your brain to hear your friends at a party

... the Oxford Auditory Neuroscience Group found that spatial hearing in ferrets has the ability to bounce-back ...l hearing are very good at this and have excellent spatial hearing. The team then fitted each of the ferrets with a small earplug in one ear which blocks s...

Memories: It's all in the packaging, scientists say

...word, activity was seen in an area associated with spatial processing. But if the subject remembered the word, the color and the location, then another critical brain region became involved. The researchers observed enhanced activity in the intra-parietal sulcus, a part of the parietal cortex. It appears tha...

Regulating the nuclear architecture of the cell

...cell and organism through nuclear architecture and spatial rearrangements is known as epigenetics from the Greek for "on, over, or at" the genes, instead of by the DNA sequence. The chromosomal material known as heterochromatin mediates gene silencing, chromosome inheritance, and other processes. Karpen a...

Muscle and bone from an ink-jet printer

...ls differentiate from stem cells, but also gaining spatial control of stem cell differentiation, are important capabilities if researchers are to engineer replacement tissues that might be used in treating disease, trauma, or genetic abnormalities. Spatial patterning of stem cell differentiation through deli...

New dyslexia theory blames 'noise'

...e Nature Neuroscience study], which used different spatial and temporal patterns." ...

Slow brain waves play key role in coordinating complex activity

... have different functions and operate on different spatial scales - a patch of high frequency activity is very localized, about the size of a dime or smaller on the brain, and is associated with bottom-up sensory or motor processing, while the theta rhythm is much more spatially widespread, the size of a sil...

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