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Tag: "imaging" at biology news

Mimicking how the brain recognizes street scenes

..., and eventually visual search engines, biomedical imaging analysis, robots with realistic vision. On the neuroscience end, this research is essential for designing augmented sensory prostheses, such as one that could replicate the computations carried by damaged nerves from the retina. "And once you have a ...

Lithium builds gray matter in bipolar brains, UCLA study shows

...vel method of three-dimensional magnetic resonance imaging (MRI) to map the entire surface of the brain in pe...aid Bearden. "We used a novel method for brain imaging analysis that is exquisitely sensitive to subtle differences in brain structure," she said. "This ty...

Newborn brains grow vision and movement regions first

...lly obtain very high resolution magnetic resonance imaging (MRI) scans on a large group of newborns. The resu...tals were given high-resolution magnetic resonance imaging (MRI) scans in the first few weeks after birth. In terms of brain volume, the researchers found n...

Reading hidden intentions in the human brain

By imaging patterns of activity in the brain's prefrontal cor...in the new work used functional magnetic resonance imaging (fMRI) to assess brain activity while subjects concentrated on their choice of intended mental actio...

Insomnia drug can improve brain function

...tion, and object naming. They also conducted brain imaging studies to assess brain metabolism and cognitive activation using PET scans. All of these were conducted with both zolpidem and a placebo in a randomized, double-blind study. The results showed that after receiving zolpidem, the patient was able t...

Tracing broken wiring in stroke patients

...so demonstrate the value of the magnetic resonance imaging (MRI) technique for studying how disruption in brain circuitry produces behavioral symptoms. Maurizio Corbetta and colleagues reported their findings in the March 15, 2007 issue of the journal Neuron, published by Cell Press. The researchers used...

Using brain scans, researchers find evidence for a two-stage model of human perceptual learning

Using advanced brain imaging techniques, researchers at Georgetown University M... speed up learning to detect targets in unfamiliar imaging modalities, such as baggage X rays or radar images," he said. ...

Bioluminescence at the service of a novel cerebral imaging technique

...ion have developed a new technique for the in vivo imaging of neuronal function using bioluminescence, based on a GFP-aequorin fusion protein. This imaging technique enables the monitoring of neuronal activity (and more specifically, calcium activity), rea...

Scientists create dual-modality microbeads to improve identification of disease biomarkers

...ter the beads are removed from the liquid, optical imaging is used to determine the concentration of a specific protein or virus in the liquid sample based on the number of proteins or viruses attached to the surface of the beads. Tushar Sathe, a graduate student in the Wallace H. Coulter Department of B...

Researchers discover genetic cause for word-finding disease

...at's a pretty big question," added Mesulam. MRI imaging of the brains of people with PPA shows the language part in the perisylvian region of the left hemisphere has shrunk. By comparison, Alzheimer's Disease targets the hippocampus on both sides of the brain. One of the oddities about PPA is that even ...

Computer imaging assists with facial reconstructive surgery

...hs could help facial plastic surgeons use computer imaging software to achieve aesthetic harmony in their pat... authors conclude. “For surgeons who use computer imaging software, analysis of profile photographs is the most valuable tool. Even when preoperative and pos...

Studies yield insight into the numerical brain

...s were scanned using functional magnetic resonance imaging (fMRI), in which harmless magnetic fields and radio waves are used to measure blood flow in brain regions, which reflects activity. The researchers found that the initial presentation of the numeric stimuli activated the parietal region of the subj...

Neural bottleneck found that thwarts multi-tasking

...functional magnetic resonance imaging, or fMRI, an imaging technology that reveals the brain areas active in a given mental task by registering changes in oxygenated blood concentration in these regions. While fMRI is an excellent tool for identifying a particular area in the brain involved in a given task, ...

Do you hear what i see?

... Kayser’s team used functional magnetic resonance imaging to draw a map of 11 small, tightly packed fields in the monkeys?auditory cortex that differ by the frequency of sound they process. Scans recorded activity in the monkeys?brains while they watched a video, with and without sound, and listened separat...

Ultrasound upgrade produces images that work like 3-D movies

... developed real-time, three-dimensional ultrasound imaging says it has now modified the commercial version of... way with only minor software changes." The new imaging capability can improve the early diagnosis of certain kinds of birth defects of the face and skull a...

Boosting brain power -- with chocolate

... University of Nottingham, used magnetic resonance imaging (MRI) to detect increased activity in specific areas of the brain in individuals who had consumed a single drink of flavanol-rich cocoa. The effect is linked to dilation of cerebral blood vessels, allowing more blood ?and therefore more oxygen ?to re...

Novel computed imaging technique uses blurry images to enhance view

... do for optical microscopy what magnetic resonance imaging did for nuclear magnetic resonance, and what compu... perform high-speed, micron-scale, cross-sectional imaging without the need for time-consuming processing, sectioning and staining of resected tissue," said St...

Nanoparticles can track cells deep within living organisms

...ticle-labeled cells used in such treatments by MRI imaging would allow physicians to monitor the treatment's ...eported the first use of perfluorocarbon molecular imaging for detection of certain pathologies a few years ago, no one would have predicted that you could get...

Light-based probe 'sees' early cancers in first tests on human tissue

...e those changes with much better accuracy than any imaging technique," Wax said. His team plans to begin a small clinical trial of the advanced endoscope in collaboration with researchers at Duke University Medical Center. The team also is conducting animal studies to test the feasibility of incorporating...

Ring-around-the-cell

...d-down, polarized osteoclasts: electron microscope imaging that allowed them to see fine details of the ring structure, and a light microscope method in which specific features glow. Because each method captures different information at a different scale, combining them was tricky, but the two together gave ...

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