stimulated 2 5

Tag: "stimulated" at biology news

Cancer cells forming blood vessels send their copper to the edge

...-like structures within about eight hours of being stimulated with specific growth factors. We then examined the distribution of elements in these structures by using imaging resources." The APS played a key role in the research. The particular APS beamline Finney and her colleagues used employs specialized ...

Brain works more chaotically than previously thought

...cisely which receptors of the insulating cells are stimulated by the neurotransmitter ?another starting point for developing new drugs. Yet, why can glutamate sometimes be so dangerous? When an epileptic fit occurs, the nerve cells "fire" very rapidly and fiercely. In this event so many impulses run through ...

New dopamine brain target discovered

... only create brain signals when both receptors are stimulated at the same time. Using animal models. Drs. George and O'Dowd and their team identified this complex by its unique reaction to dopamine or specific drug triggers. Strikingly, stimulating this target with dopamine or specific drugs triggered a rise...

Brain networks strengthened by closing ion channels

... cell, connecting the network. These receptors are stimulated by a natural brain chemical norepinephrine or by medications like guanfacine. "Guanfacine can strengthen the connectivity of these networks by keeping these channels closed, thus improving working memory and reducing distractibility," she said. ...

Penn study on olfactory nerve cells shows why we smell better when we sniff

...rease the sensitivity of our nose, especially when stimulated by weak odors," says Ma. "It helps the brain make better sense out of odor responses when it integrates airflow information. We still don't know how it happens, but sniffing is essential for odor perception." ...

Wired for sound: How the brain senses visual illusions

...that the second sound amplified the brain activity stimulated by the first sound. Perception of the second illusory flash was also marked by a rapid enhancement of processing in the auditory cortex of the brain. By observing the auditory boost, the researchers could predict when subjects would report seeing t...

Dinosaur hearing, listening to muscle noise, quieter cubicles

...Mars Polar Lander in 1999--and explain how it has stimulated ideas for acoustical exploration of space (3aPAb2). Michael Yang of ATA Engineering in San Diego ( michael.yang@ata-e.com ) will discuss acoustical issues associated with SpaceX's Falcon 1. The Falcon 1 is designed to minimize the price per launch a...

Newborn neurons like to hang with the 'in' crowd

...ver the receptor picks up a glutamate signal it is stimulated and relays the signal. For young neurons that signal means survival. As a matter of fact, only about half of all newly born neurons manage to successfully integrate into the existing network of brain cells, at least in mice living in bare standard...

Traumas like Sept. 11 make brains more reactive to fear

...re sensitive emotional reactions in the brain when stimulated by photographs of fearful faces. "Our study suggests that there may be long-term neural correlates of trauma exposure, even in people who have looked resilient," said lead author Barbara Ganzel, Cornell M.S. '99, Ph.D. '02, a postdoctoral researche...

Nitric oxide: Key to cardiovascular and pulmonary function and drug effectiveness

... ordinarily shuts the receptors off after they are stimulated The researchers reported their latest findings on Friday, May 4, in the journal Cell. "This work is significant in that it demonstrates how two of the most pervasive physiological systems -- G-protein coupled receptors and nitric oxide -- com...

Hearts of male and female rainbow trout are different

...ate release in both males and females; under stimulated conditions with DCA vs. controls, female ventricle strips selectively demonstrated better performance and reduced lactate release; force production during reoxygenation -- after a hypoxic insult -- significantly improved in males receiving DCA,...

How brain pacemakers erase diseased messages

...what would happen when the cells were electrically stimulated at various rates and intensities. In addition to showing how the therapy works, their model of neurons in action also revealed that stimulation delivered at too slow a pace fails to keep bad information at bay. Indeed, slower pulses can actually a...

Old memory traces in brain may trigger chronic pain

...their preferred dark side, scientists mechanically stimulated their sensitive limbs. The rats didn’t like that a...reated them with D–Cycloserine. Again, scientists stimulated the rats’ sensitive limbs. This time, however, the rats remained in the dark chamber. “Their ave...

1 2 3 4 5