Until the development of a new nanomaterial-based sensor in Germany, the brain’s magnetic field was measurable only under technical laboratory conditions. This prevented the technology’s use in medical applications. The new sensors, however, operate at normal conditions. Neither cooling nor external magnetic bias fields are required.
Researchers at Northwestern University's Department of Radiation Oncology and Argonne National Laboratory recently deployed a new non-destructive X-ray microscopy solution from Xradia to image cryogenically preserved cells and advance studies of intra-cellular biology.
Mount Everest has attracted climbers and adventurers for nearly 100 years. Now, a team of U.S. scientists have set up a laboratory at the base of the world’s highest mountain to study the effects of high altitude on humans. A team from the Mayo Clinic in Minnesota says it plans to monitor nine climbers attempting to scale Everest to learn more about the physiology of humans at high altitudes in order to help patients with heart conditions and other ailments.
Nearly half of the 12 million babies born prematurely in developing countries experience episodes of apnea, a sudden stoppage of breathing. Working from that knowledge, five bioengineering students from Rice University created the Babalung Apnea Monitor, which can restart a baby's breathing and raises a flag if it can't.
A new quantum mechanical-based biosensor designed by a team at University of California, Santa Barbara offers potential for detecting biomolecules at ultra-low concentrations. The research team’s technology beats the fundamental limits of a conventional field-effect transistor (FET) designing a Tunnel-FET sensor that is faster and four orders of magnitude more sensitive.
Technological advances have produced implantable, electronic solutions for dosing and therapeutic functions in humans. However, these medical devices use probes, actuators, and electronic controls that need power. Researchers at the Fraunhofer Institute for Ceramic Technologies have recently succeeded in wirelessly transmitting power from a portable transmitter module to a receiver, offering the possibility of wirelessly-powered medical devices.
Using genetic engineering techniques, researchers in Germany have generated cells that emit green fluorescent light when stimulated by the binding of a cognate antigen. Previously antigens, which induce destructive immune responses, could not be identified directly without some prior knowledge of their structure.
Today, scientists map entire genomes mostly for research, but as genome mapping gets faster and cheaper, scientists and consumers have wondered about possible broader use: Would finding all the glitches hidden in your DNA predict which diseases you'll face decades later? Unfortunately, it’s not that simple, say experts.
Microfluidic devices have the potential to be fast, cheap, and portable diagnostic tools. But for the most part, the technology hasn't yet made it to the marketplace. While scientists have made successful prototypes in the laboratory, microfluidic devices—particularly for clinical use—have yet to be manufactured on a wider scale. However, Massachusetts Institute of Technology's David Hardt is working to move microfluidics from the laboratory to the factory.
Our memories leave traces that we may conjure up in remembrance, accompanied by time, place, and sensations. These memory “engrams” are more than just conceptual. Recent optogenetics studies have shown that memories really do reside in very specific brain cells, and simply activating a tiny number of neurons can conjure an entire memory.
With the help of functional magnetic resonance imaging scientists in Germany have identified two areas of the brain that compare the movements of the eye with the visual movements cast onto the retina so as to correctly perceive objects in motion. Without this ability the brain would not be able to distinguish what is in motion: the world or us.
Most heart attacks happen when fatty deposits in an artery burst open, a blood clot forms to seal the break, and the blood clot blocks blood flow. Unfortunately, today's best tests can't predict when that's about to happen. Now scientists have found a clue that one day may help doctors determine if a heart attack is imminent, in hopes of preventing it.
Researchers in Japan have built a multimodal bio-image sensor that can render images of the 2D distribution of proton concentration (pH) and fluorescence intensity for multimodal analyses of biochemical objects.
Remember Slinky, the coiled metal spring that “walks” down stairs with just a push, momentum and gravity? Researchers at NIST have developed their own version of this classic—albeit 10 million times smaller—as a new technology for manipulating and measuring DNA molecules and other nanoscale materials.
A team of researchers has figured out a way to measure nanopores—tiny holes in a thin membrane that can detect single biological molecules such as DNA and proteins—with less error than can be achieved with commercial instruments. The new integrated circuit design could lead to cheaper, faster DNA sequencing.
Distinct patterns of activity—which may indicate a predisposition to care for infants—appear in the brains of adults who view an image of an infant face—even when the child is not theirs, according to a study by researchers at the National Institutes of Health and in Germany, Italy, and Japan.
Despite a century of research, memory storage in the brain has remained mysterious. Evidence points to synaptic connection strengths among brain neurons, but synaptic components are short-lived and yet memories can last lifetimes.Recent has demonstrated a plausible mechanism for encoding synaptic memory in microtubules, major components of the structural cytoskeleton within neurons.
Inspired by the paper-folding art of origami, chemists at the University of Texas at Austin have developed a 3D paper sensor that may be able to test for diseases such as malaria and HIV for less than 10 cents. Such low-cost. point-of-care sensors could be useful in the developing world.
For more than five weeks, a woman's body lay undisturbed in a secluded Texas field. Then a frenzied flock of vultures descended on the corpse and reduced it to a skeleton within hours. Adn it was done on purpose. Not as a crime, but as a scientific experiment into the way human bodies decompose. The results are upending some long-held assumptions about decay.
Our DNA is most similar to chimpanzees, our closest relatives. Recent research that finally deciphered the entire genome of the gorilla, however, held a surprise. A sizable portion of our genome is closer to a gorilla's than to a chimp's, and this revelation could affect the way we look at our evolutionary tree.
Researchers who recently used functionalized magnetic resonance imaging to pin down the exact source of creativity in the brain have found that the left hemisphere of the brain, thought to be the logic and math portion, actually plays a critical role in creative thinking.
Using a new model to explain how mammalian cells establish the sense of direction necessary to move, researchers at the University of Texas have predicted how bacteria like Escherichia coli that cause food poisoning can hijack a cell’s sense of direction. They then confirmed those predictions in living cells.
Researchers at the Massachusetts Institute of Technology, Harvard University, Massachusetts General Hospital, and Brigham and Women's Hospital have devised a simple blood test that can predict whether sickle cell patients are at high risk for painful complications of the disease. To perform the test, the researchers measure how well blood samples flow through a microfluidic device.
According to a 2003 study by German and American scientists, a component of the Lily of the Valley scent known as Bourgeonal alters the calcium balance of human sperm, which acts to attract the sperm to the source of the scent. The finding the sperm can smell inspired new studies and even a book title, but it is now at risk of being debunked after recent research in Germany.
Scientists at RIKEN Advanced Science Institute in Japan, with help from colleagues at the University of California, Los Angeles, have invented a polymer film loaded with antibodies that can capture tumor cells. This could be an important diagnostic tool because during metastasis cancerous tumor cells float around the bloodstream, nearly impossible to detect.