brains 2 5

Tag: "brains" at biology news

Cell therapy slows progression of an inherited neurological disease; Improves motor skills in mice

...y, transplanted cells that produce myelin into the brains of newborn MLD mice. The researchers found that th...lanted myelin-producing cells survived in the mice brains and successfully moved to regions of the brain where they could aid in producing myelin. The transpl...

Stanford study of owls finds link in brain between sight and sound

... can make adjustments in the circuits of the owls' brains that will lead to improved performance in the owl. Understanding the mechanisms of attention naturally leads to the possibility of applying their knowledge to human disorders of attention, learning and schizophrenia. "If you understand mechanistical...

How taste response is hard-wired into the brain

...icroscopic 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 selectively switched-on the Gr5a neurons, while a range of bitter substances switched-on the Gr66a neurons. However...

Engineered mouse mimics cognitive aspects of schizophrenia

...th a reward. Biochemical analyses of the animals' brains revealed that the excess dopamine receptor activity in the striatum contributed to abnormal prefrontal cortical function. Importantly, found the researchers, they could not reverse these cognitive deficits by using the antibiotic to damp down the do...

How 'hot' emotional brain interferes with 'cool' processing

...r a new face. Throughout the tests, the subjects' brains were scanned using fMRI. This widely used technique involves using harmless magnetic fields and radio waves to scan the brain to detect levels of blood flow, which indicates increased or decreased brain activity. In earlier studies, the researchers ...

Why nerve cells work faster than the theory allows

... attributed to the higher number of neurons in the brains of these animals, but also to the manner in which the neurons process signals. To do so, these higher animals presumably use molecular mechanisms which the lower animals do not possess. ...

Researchers discover a new genetic cause of Alzheimer's disease

...the primary component of the senile plaques in the brains of patients. The new discovery demonstrates that the greater the quantity of the protein that is produced, the younger the dementia patient is. Alzheimer's disease Alzheimer's disease is a memory disorder that affects up to 70% of all dementia pa...

Less is more, gene study shows

...ally in many ways---their walk, the sizes of their brains and their capacities for speech and language, for example. Scientists would like to know how and when such differences arose, and new research from the University of Michigan shows how one process---gene loss---may have figured in. The work, by a ...

The urban evolution lab

...the primary component of the senile plaques in the brains of patients. The new discovery demonstrates that the greater the quantity of the protein that is produced, the younger the dementia patient is. Alzheimer's disease Alzheimer's disease is a memory disorder that affects up to 70% of all dementia pa...

Watching the brain switch off 'self'

...the tests, the researchers scanned the volunteers' brains using functional magnetic resonance imaging. In this widely used technique, harmless magnetic fields and radio waves are used to scan blood flow in brain regions, which indicates activity. The researchers found that regions of the brain activated du...

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

...development," says Dr. Troje. "It seems like their brains are 'hard wired' for this type of recognition." One impetus for starting this research several years ago was a question by his young daughter, who asked him why she could get so much closer to wild rabbits in their neighborhood while riding on her...

Oops! Researchers publish new findings on the brain's response to costly mistakes

...re active in response to a no-penalty error in the brains of a small group of OCD patients, compared to peop...oscience, involved 12 healthy adults who had their brains scanned using a powerful functional MRI (fMRI) imaging machine, while they were asked to respond to ...

Face perception is modulated by sexual orientation

...tterns of activation in the hetero- and homosexual brains in response to faces of the same or opposite sex. In their new work, the researchers hypothesized that hetero- and homosexual subjects would exhibit a greater response to faces they deem sexually preferable. Specifically, the researchers predicted si...

Nobelist discovers antidepressant protein in mouse brain

...s idea, the researchers examined p11 levels in the brains of depressed humans and "helpless" mice, considere...all caused an increase in the amount of p11 in the brains of these mice," said Greengard. "They all work in totally different ways, but in all cases they caus...

How to grow a bigger brain

...ing to a new study by researchers at UC Davis. The brains of those young fish were closer to those of salmon...ideotaped the fish, and measured the size of their brains after 10 to 12 days, when the fish were emerging as free-swimming fry. She also studied fish reared ...

Possible brain hormone may unlock mystery of hibernation

... treatments that block HP activity in the animals' brains cuts hibernation short. "One of the most curious biological phenomena in mammals is their ability to hibernate circannually, which allows them to survive unusually low body temperatures at or near freezing," said study author Takashi Ohtsu of Kanaga...

Genetically altered mice no longer like cocaine

...u said. "It's possible that, somehow, the animals' brains rewired themselves and, as a result, the mice still felt the effects of cocaine." The current study suggests that cocaine's blockade of dopamine transporters is still required in order to produce a high in normal mice. Gu said the next step is to s...

Ritalin packs punch by elevating norepinephrine, suppressing nerve signal transmissions

...te (Ritalin) elevates norepinephrine levels in the brains of rats to help focus attention while suppressing nerve signal transmissions in the sensory pathways to make it easier to block out extraneous stimuli, a Philadelphia research team has found. Their report in the Journal of Neurophysiology helps expl...

Drug triggers body's mechanism to reverse aging effect on memory process

...toration of LTP was found in the middle-aged rats' brains even after the ampakines had been cleared from the...minutes; the increase in LTP was seen in the rats' brains more than 18 hours later. According to the researchers, this study suggests that pharmaceutical prod...

Cell phone emissions excite the brain cortex

...ffects of the EMF were transient and the subjects' brains tended to return toward baseline conditions one hour after the exposure. It would be premature to presume that this work implies that using a cell phone is bad for the brain in any way. Much more work needs to be done to understand whether these e...

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