signal 2 9

Tag: "signal" at biology news

Marine mammals are on the frontline of failing ocean health

... areas near urban runoff and sewage outfalls. The signal of pollutants is so distinct that it is echoed in the tissues of killer whales. Sub-populations once thought to feed mainly on salmon in Alaska are now suspected to be feeding on high trophic-level fish, such as shark or tuna, in California during t...

Pittsburgh researchers discover that certain chemicals in the blood may indicate brain injury

... certain proteins in the blood or spinal fluid may signal brain injury in infants with vomiting, fussiness and several other common symptoms. Infants with shaken baby syndrome (SBS) ?the most common cause of severe traumatic brain injuries in young children ?are often misdiagnosed because doctors rarely r...

University of Utah to help build bionic arm

...ray. It also will combine the electrode array with signal processors and amplifiers so that the implanted de...ature electronic components such as amplifiers and signal processors; and Florian Solzbacher, an assistant professor of electrical and computer engineering, w...

Warbling whales speak a language all their own

... Buck is an electrical engineer who specializes in signal processing and underwater acoustics at the University of Massachusetts Dartmouth, and Tyack is a biologist at Woods Hole Oceanographic Institution in Massachusetts. Suzuki, who began the project as an electrical engineering undergraduate at the Univ...

Both alcoholism and chronic smoking can damage the brain's prefrontal cortex

...ray. It also will combine the electrode array with signal processors and amplifiers so that the implanted de...ature electronic components such as amplifiers and signal processors; and Florian Solzbacher, an assistant professor of electrical and computer engineering, w...

Mayo Clinic collaboration discovers protein amplifies DNA injury signals

...ites or lesions. In healthy situations, DNA repair signal pathways are competently monitoring for damage and alerting the repair system when DNA lesions are detected. "Most of the time we don't really encounter severe damage in the cell; most of the damage to DNA is mild injury -- such as low doses of sunl...

Attention shoppers: Researchers find neurons that encode the value of different goods

...endently of the specific action the animal uses to signal its choice. For example, OFC neurons encoding the value of apples and oranges would do so regardless of whether the apple is offered on the right and the orange on the left, or vice versa. "This result has broad implications for possible psychologi...

Darkness unveils vital metabolic fuel switch between sugar and fat

...ation, researchers note that the pivotal metabolic signal that emerged from the dark also presents a new tar...the paper notes. "5'-AMP is a pivotal metabolic signal whose circulatory level determines the balance of the peripheral organ energy supply between glucose...

Born with a love of speech

...'s built in and there's something about the speech signal that they're tuned to listen to without the benefit of experience, or does it come from their prenatal experience in the womb? I think we've shown that there's an experience-independent component to newborns' preference for speech," says Dr. Voulouma...

Concern over fast tracking of new drugs

...d experience with natalizumab should be taken as a signal to change the way we treat this disease, he concludes. ...

New hybrid virus provides targeted molecular imaging of cancer

...D., professor of Medicine and Cancer Biology. "The signal is specific only to tumors, so one can monitor drug effectiveness at the molecular level." The team created and characterized the hybrid viruses by combining genetic elements and biological attributes of an animal virus (adeno-associated virus, or A...

How taste response is hard-wired into the brain

...ith fluorescent labels on their neurons that would signal activation of one or the other type. They used microscopic imaging through tiny windows in the fly brains to watch neuronal response when they exposed the flies to sweet or bitter chemicals They found that a whole range of sweet substances selective...

Researchers develop portable 'vein finder' for faster, more accurate injections

...parts: A reusable unit houses the electronics and signal processing components, while a disposable coupler ...to using a single sensor, which limits the type of signal processing we can do to eliminate the scattering effects." Once the system is successfully adapted...

Honeybee decision-making ability rivals any department committee

...at any one site, the researchers found, the scouts signal to the waiting bees in the swarm that it's time to warm up their flight muscles in preparation for takeoff. Each scout does so by scrambling through the swarm cluster and briefly pressing its vibrating thorax against the other bees to stimulate them ...

Study in Science holds promise for a new approach to drug therapy

... part of a process where cells convert one kind of signal received on their surfaces into another set of sig...unit binds to phosphoinositide 3 kinase, sending a signal that the cell needs to move in on and attack invading viruses. In heart muscle cells, a similar mech...

How nerve cells stay in shape

...al activity at individual synapses showed impaired signal transmission in cells lacking Staufen2 protein. "This was important evidence that Staufen2 is necessary for the formation of functional synapses in nerve cells," Kiebler says. His group thus creates the first conceptual link between molecular process...

Why nerve cells work faster than the theory allows

... Nobel Prize, has since then served to explain the signal processes in all neurons. According to the Hodgkin-Huxley model, an action potential is initiated when the voltage across the membrane of the nerve cell reaches to a certain threshold value. Voltage gated sodium channels react to this voltage chang...

Protein 'nanosprings' most resilient found in nature

...g sound (a mechanical stimulus) into an electrical signal that can be transmitted to the brain ?a process known as mechanotransduction. Ankyrin proteins also coordinate the ion channels and transporters that control the beating of the heart. In 2004, Bennett's team linked mutations in the gene ankyrin-B to...

Animal brains 'hard-wired' to recognize predator's foot movements, Queen's study suggests

...Troje. "We believe this visual filter is used to signal the presence of animals that are propelled by the motion of their feet and the force of gravity," suggests Dr. Troje, Canada Research Chair in Vision and Behavioural Sciences. Conducted with Dr. Cord Westhoff from the Ruhr-Universität Bochum in Ge...

MiRNA fingerprint identified in platelet formation

...hink that when these miRNAs are turned off, it's a signal to other gene targets to get busy with the normal process of development." Garzon says just the opposite happens in AMKL, an unusual form of leukemia more often found in children than adults. In examining four sets of AMKL lines, they found that 10...

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