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Tag: "magnetic" at biology news

Scientist uses form to explain function of key building blocks of life

...on affinities." Markley and his team used nuclear magnetic resonance spectroscopy, a technique that allowed them to observe signals from atoms in the proteins, to determine the strength of hydrogen bonds in ten different variants of the protein. From that data, the team was able to explain changes in protei...

Brain activity related to processing faces is similar in people with, without autism

...rs Research Center. The study involved functional magnetic resonance imaging, or fMRI. Unlike standard MRI scans that show anatomical structures in black and white, fMRI offers digitally enhanced color images of brain function, depicting localized changes in blood flow and oxygenation. When particular regi...

Researchers know what you were about to say; fMRI used to detect memory storage and retrieval

Using functional magnetic resonance imaging, or fMRI, researchers at the University of Pennsylvania and Princeton University have provided evidence that the act of recalling a memory is a bit like mental time travel. Their study, presented in the Dec. 23 edition of the journ...

Bigger brain size matters for intellectual ability

...onsibility in considering the likely future use of magnetic imaging (or MRIs) of brain structure as a measure of ability in student and workforce settings. "We're going to need to be careful if, in the future, we use MRI brain scans as a measure of ability in any selection process," she said. ...

Magnetic probe successfully tracks implanted cells in cancer patients

By using MRI to detect magnetic probes of tiny iron oxide particles, an internatio...lte and a team of Dutch researchers used MRI and a magnetic probe approved by both European and U.S. agencies to locate therapeutic cells injected into eight me...

Seaweed yields new compounds with pharmaceutical potential

...work done at Emory University in Atlanta), nuclear magnetic resonance spectroscopy and mass spectral analyses to determine how carbon, oxygen, bromine and hydrogen atoms connected to make up the molecular structures of the 10 new natural products. Much research is left to do before any of these compounds ar...

Researchers develop new method for studying 'mental time travel'

...man and his colleagues used Princeton's functional magnetic resonance imaging (fMRI) scanner to capture the participants' brain activity patterns as they studied the images. They then trained a computer program to distinguish between the patterns of brain activity associated with studying faces, locations or ...

MIT researcher finds neuron growth in adult brain

...neurons. With the help of technology similar to magnetic resonance imaging (MRI), but at a much finer, cellular resolution, the researchers were able to stitch together two-dimensional slices to create the first 3-D reconstruction of entire neurons in the adult cortex. Dendritic branch tips were measured o...

Ancient anthropoid origins discovered in Africa

...lion years old by measuring telltale variations in magnetic fields in the sediments due to ancient fluctuations in the earth's magnetic fields. According to Simons, other anthropoids exist at BQ-2 and will soon be described, The latest...

Bacteria which sense the Earth's magnetic field

...mpass' inside bacteria orients them to the Earth's magnetic field. The entire bacterium is oriented like a compass needle inside the magnetic field. Until now, it was not clear how the cells organise magnetosomes into a stable chain, against ...

Research Permits First-Ever Visualization of Psychological Stress in the Human Brain

Using a novel application of an fMRI (functional magnetic resonance imaging) technique, researchers at the University of Pennsylvania School of Medicine have, for the first time, visualized the effects of everyday psychological stress in a healthy human brain. Their work, performed at Penn's Center for Fun...

Displaced songbirds navigate in the high Arctic

...Northwest Territories to regions at and around the magnetic North Pole, researchers have gained new insight in... route to nine sites on the tundra, among them the magnetic North Pole (located on Ellef Ringnes Island). The researchers then recorded the birds' directional o...

What Makes The Brain Tick, Tick, Tick: Researchers Gaining New Insights Into Brain's Internal Clock

...signals in ensembles of brain cells and functional magnetic resonance imaging of the brain. For example, they are studying how the clock's ticking changes in Parkinson's patients as they change levels of their medication, which effects the amount of dopamine in their brains. Dopamine has been implicated as a...

A 'dimmer switch' for genes

...e flexible and changing." The team used a nuclear magnetic resonance, or NMR, which allows scientists to observe how the atoms of a molecule behave inside a magnetic field. The Graves team found that unstructured regions of the Ets-1 protein were affecting the struc...

Out of sight, out of mind? Not necessarily

...n nine volunteers with normal vision. Transcranial magnetic stimulation (TMS), a harmless noninvasive technique using brief magnetic pulses, was applied to the volunteers' visual cortex -- the area at the back of the brain that proce...

Rutgers to lead $52.7 million protein research program

...using methods of X-ray crystallography and nuclear magnetic resonance (NMR) spectroscopy, with the full PSI producing between 4,000 and 5,000 over the next five years. "These structures will have tremendous value in understanding basic biology, and in developing the next generation of diagnostics and medicine...

Brain networks change according to cognitive task

...sing a newly released method to analyze functional magnetic resonance imaging (fMRI), Northwestern University researchers have demonstrated that the interconnections between different parts of the brain are dynamic and not static. This and other findings answer longstanding debates about how brain networks op...

India's smoking gun: Dino-killing eruptions

...of the traps gathered from radiometric dating with magnetic fields frozen in the rocks. Volcanic rocks record information about the Earth's magnetic field with magnetic minerals that align with Earth's field like millions of tiny compasses before th...

Israeli scientists successfully transplant frozen-thawed ovaries in sheep

... after transplantation the researchers carried out magnetic resonance imaging (MRI) on one sheep with a transplanted ovary and one untreated control sheep. It showed that the transplanted ovary contained small oocyte follicles, and although a little smaller than the ovary in the control sheep it was within th...

Scientists create digital bacteria to forge advances in biomedical research

...simulations to understand how the sun reverses its magnetic field every 11 years. Each digital cell in AgentCell is a virtual Escherichia coli, a single-celled bacterium, which is equipped with all the virtual components necessary to search for food. These digital E. coli contain their own chemotaxis system,...

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