Tag: "maze" at biology news

New study in rats matches genetic influences and cognitive impairment

... on two memory tasks, learning to navigate a water maze and remembering familiar objects in their cages. After training, the scientists examined the brain tissue of the rats, specifically the hippocampus, an area associated with memory and cognition. RNA (ribonucleic acid, which carries out the DNA's in...

Gene-expression atlas will provide new direction for brain and spinal-cord studies

...y light the way for neuroscientists to explore the maze of connections between cells in the central nervous system (CNS). The researchers who developed the atlas said it would enable scientists to determine when and where specific genes are switched on in the CNS. Researchers can use such clues to explor...

Diet may improve cognition, slow aging, and help protect against cosmic radiation

...tested the animals' ability to learn a complicated maze task. The rats that had been fed the blueberry extract were significantly less impaired at performing the task than those that didn't receive the extract. "We believe the blueberries contain a particular group of as-yet unidentified bioactive chemica...

Cell death promotes learning growth

...s of spatial learning measured in the Morris water maze have distinct actions on cell proliferation. In this task, two phases of learning can be distinguished: an early phase during which performance improves rapidly, and a late phase during which asymptotic levels of performance are reached. These two ph...

USGS December science picks!

...ach Geography, according to USGS researchers. The maze patterns can take the face of famous people, maps,...number of others shapes. Unlike tracing through a maze with pencil (or crayon) on paper, in a corn maze, the human being becomes the "tracer." Mazes and m...

Could memory performance and spatial learning be genetically based?

...nd F2 cohorts at 12 weeks of age. The Morris water maze (MWM) task was performed using a circular water maze and a computer tracking system. A circular platform was placed at the center of one of four imaginar...

Small amounts of alcohol or anesthetics may damage the developing brain

...ol and anesthetic drugs have difficulty performing maze tests that are used help to measure spatial learning and spatial working memory in rats. Their brains also exhibit defects in neuronal processes that occur in the hippocampus, a brain structure known to be important in learning and memory. Zorumski'...

National ocean commissioners & scientists call for overhaul of ocean policies & management

...een made independently of one another. Likewise, a maze of political and legal boundaries has made it difficult to ensure that the entire life cycles of these fish are protected. Ecosystem-based management provides a new framework to take a step back and comprehensively consider the multiple factors affec...

Ancient Greeks help scientists build environmentally friendly nano devices

...earchers, and find the right ways through the vast maze of possible nano-devices". Carefully crafted nano-sized holes in the films also act as pockets for other useful Nano-particles, tethering them in place ("Contained Nano"). The nano-honeycomb structures can provide the equivalent of a scaffolding to a...

Gene linked to alcoholism

...to water and evincing highly anxious behavior in a maze test. Results of the study are published in the Ma... baseline anxiety-like behaviors, as measured by a maze test. Alcohol exposure reduced their anxiety, though less so than in normal mice, and increased lev...

Early dexamethasone exposure has long-term neurodevelopment, neuroendocrine effects

... in single-housed DEX animals in the elevated plus maze and open field, but there were no differences between groups in a light-dark test. Although these animals exhibit increased anxiety-like behavior in threatening environments, they demonstrate no such behavior when placed in a less threatening novel ...

Herpes tool allows researchers to customize Alzheimer's vaccine

...fe from intruders, even rivaling in complexity the maze of law enforcement agencies that keep citizens safe. For the fight against terrorism, for instance, the nation relies on the CIA, FBI, Homeland Security, other federal agencies not to mention village and city police, county sheriffs, state police, s...

New UCF researchers, college will help fight Alzheimer's disease, cancer

...d that the memories of aged lab rats swimming in a maze dramatically improved when healthy stem cells were injected into their brains. In some cases, the older rats began to perform as well as young ones in the maze. Sugaya plans to continue using rats to test the viability of injecting stem cells into br...

Cardiac arrest may hinder ability to learn certain tasks

...to surgery, the animals navigated the Morris water maze a task that requires finding an escape platform h...nk. All of the mice were reintroduced to the maze about a week after surgery. The researchers left the platform in the same place as it had been prior...

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