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Keyword: imaging

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  • Hi-tech goggles 'detect cancer cells'

    04/28/2014 12:24:18 AM PDT · by aquila48 · 1 replies
    BBC ^ | 11 April 2014 | Bahman Kalbasi
    A US trial of hi-tech goggles could reduce the need for secondary operations for cancer patients. Surgeons are not always able to tell if they have removed all the cancerous tissues and many patients face a follow-up operation to remove more. The goggles create an augmented reality, showing cancerous cells as glowing.
  • New MRI research reveals cancer cells thrive on processed sugar

    07/18/2013 3:37:50 PM PDT · by neverdem · 121 replies
    NaturalNews via The Watcher ^ | July 17, 2013 | Jonathan Benson
    Do you have a sweet tooth? If so, your dietary habits could be significantly adding to your risk of developing cancer. New research published in the journal Nature Medicine has confirmed that processed sugar is one of the primary driving forces behind the growth and spread of cancer tumors, so much so that the future of cancer screening could rely on scanning the body for sugar accumulation. Scientists from University College London (UCL) in the U.K. made this discovery after experimenting with a new cancer detection method that involves utilizing a unique form of magnetic resonance imaging (MRI). After sensitizing an MRI scanner to...
  • Imaging hits noise barrier

    07/11/2013 10:29:14 PM PDT · by neverdem · 10 replies
    Nature News ^ | 10 July 2013 | Eugenie Samuel Reich
    Physical limits mean that electron microscopy may be nearing highest possible resolution. Plans for the next generation of electron microscopes have been dealt a blow by the discovery of an unexpected source of noise that could frustrate efforts to improve resolution to well below the size of an atom. Researchers working for a leading manufacturer of advanced optics describe the noise source in a paper1 now in press. They think that they can find a way to mitigate it, but electron microscopists admit that the finding is the latest sign that their costly quest to capture ever more detailed images...
  • Sugar makes cancer light-up in MRI scanners

    07/08/2013 5:59:57 PM PDT · by neverdem · 44 replies
    Biology News Net ^ | July 7, 2013 | NA
    UCL scientists have developed a new technique for detecting the uptake of sugar in tumors, using magnetic resonance imaging. A new technique for detecting cancer by imaging the consumption of sugar with magnetic resonance imaging (MRI) has been unveiled by UCL scientists. The breakthrough could provide a safer and simpler alternative to standard radioactive techniques and enable radiologists to image tumours in greater detail. The new technique, called 'glucose chemical exchange saturation transfer' (glucoCEST), is based on the fact that tumours consume much more glucose (a type of sugar) than normal, healthy tissues in order to sustain their growth. The...
  • Two-photon microscopy: New research may help drastically reduce cost of powerful microscope...

    06/29/2013 12:04:25 PM PDT · by neverdem · 4 replies
    Phys.org ^ | Apr 21, 2013 | NA
    Two-photon microscopy: New research may help drastically reduce cost of powerful microscope technique Enlarge The same section of a mouse brain imaged with a femtosecond laser (above) and a much weaker laser but the new dye (below). (Phys.org) —A dye-based imaging technique known as two-photon microscopy can produce pictures of active neural structures in much finer detail than functional magnetic resonance imaging, or fMRI, but it requires powerful and expensive lasers. Now, a research team at the University of Pennsylvania has developed a new kind of dye that could reduce the cost of the technique by several orders of magnitude....
  • The 'Garbage Truck' of the Human Brain: New Clues to Treating Alzheimer's

    06/28/2013 11:08:37 PM PDT · by neverdem · 14 replies
    Science World Report ^ | Jun 28, 2013 | Catherine Griffin
    The brain works like a complex machine, sending electrical signals that allow us to perceive and understand the world around us. Now, scientists have discovered a new system in this brain that acts as a "garbage truck," removing waste that might affect the brain. The findings could have large implications for treating neurological disorders like Alzheimer's disease. The body defends the brain like a fortress, ringing it with a complex system of gateways that control which molecules can enter and exit. This "blood-brain barrier" was known to exist for quite some time, but it's only now that researchers are beginning...
  • Striped nanoparticle controversy blows up

    12/08/2012 11:14:18 PM PST · by neverdem · 9 replies
    Chemistry World ^ | 7 December 2012 | Simon Hadlington
    Some scientists question the existence of self-assembling stripes on nanoparticles © NPGA prickly controversy has erupted in the rarefied world of nanoscience revolving around the strength of the evidence that molecules can assemble themselves into discrete stripes around gold nanoparticles. The issue highlights the difficulty of interpreting images of nanoscale objects.For many years researchers have been decorating gold nanoparticles with thiolated ligands to imbue the nanoparticles with a range of properties. In 2004, a group led by Francesco Stellacci, then at the Massachusetts Institute of Technology in the US, published a paper in Nature Materials demonstrating that if two different...
  • Spotting silicon in graphene, it's dope

    11/27/2012 1:04:16 PM PST · by neverdem · 14 replies
    Chemistry World ^ | 26 November 2012 | David Bradley
    Atomic structures for three-fold and four-fold coordinated silicon impurities in monolayer graphene © APSA combination of scanning transmission electron microscopy and atomic-resolution spectroscopic techniques has allowed US researchers to pick out individual silicon atoms in a doped graphene sheet. The technique reveals that the silicon atoms can exist in a planar hybridised ‘sp2d’ like form when bonded to four carbon atoms, as well as the anticipated sp3 form when triply coordinated. The experimental observations mesh with simulations of two-dimensional solids and point the way to a method for exploring single impurities in graphene and related materials.Stephen Pennycook and colleagues at...
  • CONSERVATIVE OR LIBERAL, GRAY MATTER MAY DECIDE HOW YOU VOTE

    09/26/2012 10:30:38 PM PDT · by neverdem · 27 replies
    Human Events ^ | 9/25/2012 | David Alan Coia
    We knew liberals were different, but just how different is revealed in a new study of the human brain indicating that not only do liberals and conservatives share different moral sentiments, but that markedly differing brain structures underlie those sentiments. The study’s “findings demonstrate that variation in moral sentiment corresponds to individual differences in brain structure and suggest that moral values possess deep-rooted biological bases distributed across distinct brain regions,” say University of California, Santa Barbara, post-doctoral researcher Gary J. Lewis and three research collaborators in the August 2012 issue of the Journal of Cognitive Neuroscience (JCN). “People differ in...
  • Seeing cells under stress

    09/18/2012 7:42:06 AM PDT · by neverdem · 1 replies
    Chemistry World ^ | 17 September 2012 | Jennifer Newton
    The assembly includes a cell-stretching device, an atomic force microscopy head and an objective of the inverted microscopeAn analytical platform that imposes controlled mechanical strain onto live cells whilst monitoring changes in cell morphology and molecular signalling has been developed by scientists in Germany. Cellular processes induced by mechanical forces are crucial for bone healing and lung function. Understanding these processes could help to prevent and aid the development of therapies for mechanically induced lung and cardiovascular diseases and injuries.Christine Kranz and colleagues from the University of Ulm combined fluorescence microscopy with atomic force microscopy to analyse the cells. They...
  • Atomic bond types discernible in single-molecule images

    09/14/2012 7:55:26 PM PDT · by neverdem · 33 replies
    BBC News ^ | 13 September 2012 | Jason Palmer
    A pioneering team from IBM in Zurich has published single-molecule images so detailed that the type of atomic bonds between their atoms can be discerned. The same team took the first-ever single-molecule image in 2009 and more recently published images of a molecule shaped like the Olympic rings. The new work opens up the prospect of studying imperfections in the "wonder material" graphene or plotting where electrons go during chemical reactions. The images are published in Science. The team, which included French and Spanish collaborators, used a variant of a technique called atomic force microscopy, or AFM. AFM uses a...
  • Engineers build 50 gigapixel camera (Yes, you read that right)

    06/20/2012 2:50:29 PM PDT · by Red Badger · 37 replies
    Phys.Org ^ | 06-20-2012 | Provided by Duke University
    By synchronizing 98 tiny cameras in a single device, electrical engineers from Duke University and the University of Arizona have developed a prototype camera that can create images with unprecedented detail. The camera's resolution is five times better than 20/20 human vision over a 120 degree horizontal field. The new camera has the potential to capture up to 50 gigapixels of data, which is 50,000 megapixels. By comparison, most consumer cameras are capable of taking photographs with sizes ranging from 8 to 40 megapixels. Pixels are individual "dots" of data – the higher the number of pixels, the better resolution...
  • The Lens We’ll Look Through to Find a New Earth

    04/29/2012 9:48:15 PM PDT · by LibWhacker · 11 replies
    Gizmodo ^ | 3/28/12 | Brent Rose
    We have heard a lot about exoplanets in the past year. But for all the talk about these planets, which orbit a star other than our sun, we still haven't actually seen one. One tool could change that, giving us our first look at a distant planet that could be the next best thing to Earth. Currently, scientists detect an extra-solar planet by measuring the dimming of its star as the planet passes between it and our line of sight (this is known as the Transit Method). By observing the way the star's light shines around the planet, it's possible...
  • ScienceShot: Crystal Clear Nano-Gold

    03/21/2012 11:06:30 PM PDT · by neverdem · 9 replies
    ScienceNOW ^ | Robert F. Service | 21 March 2012
    Credit: Image courtesy of Nature Press Superman has nothing on Jianwei Miao, at least in the vision department. Miao, a physicist at the University of California, Los Angeles, and his colleagues have developed a way to image any type of nanoparticle with unprecedented accuracy. In the picture above, the technique, called electron tomography, shows a gold nanoparticle made up of 3871 atoms. Inside the nanoparticle, the researchers could easily resolve multiple "grains" (green, gold, blue, and red) in which atoms in each grain share a common atomic alignment that is offset from neighboring grains. The technique also manages to...
  • TSA installing privacy-protection software in imaging machines (finally, something sensible)

    07/20/2011 10:37:41 AM PDT · by rawhide · 11 replies
    ajc.com ^ | 7-20-11 | Kelly Yamanouchi
    Travelers will get more protection from prying eyes when going through security screening thanks to an upgrade to more imaging machines at Hartsfield-Jackson International Airport and many other airports around the country. TSA tested the software earlier this year on one machine at the Atlanta airport, as well as at airports in Las Vegas and Washington, D.C. The testing was successful and in the coming months the software will be rolled out to all similar machines at 40 airports, including all of the imaging machines at Hartsfield-Jackson. The $2.7 million software upgrade comes in the wake of an outcry over...
  • Need Help - What Is This Company Named NATEVEO?

    05/11/2011 12:38:30 PM PDT · by Lmo56 · 12 replies
    5/21/11 | Self
    An SUV with the word "Nateveo" [or something like it] just cruised through my neighborhood. It had a 5-foot tall rig attached to its roof. Wondering if it is an imaging company ala Google Earth OR someone trying to capture Wi-Fi nets. Tried Googling - no help there ... Any thoughts ???
  • Holograms in True Color

    04/15/2011 9:01:53 PM PDT · by neverdem · 18 replies
    ScienceNOW ^ | 7 April 2011 | Sid Perkins
    Enlarge Image In living color. This three-dimensional, true-color image of an apple was generated using a new technique of making holograms (inset) that allows the image to be viewed using ordinary white light. Credit: Science/AAAS Researchers have developed a new way to create true-color holograms that can be viewed from any angle using ordinary white light. The advance could lead to a new generation of electronic devices, such as cell phones or miniature televisions that display three-dimensional (3D) images. True 3D images can be created in several ways. In the 1960s, researchers generated the first holograms by firing a...
  • Some question pep rally atmosphere at Obama speech (Robert Gibbs approved)

    01/13/2011 6:39:50 PM PST · by markomalley · 32 replies
    AP ^ | 1/13/11 | GILLIAN FLACCUS and BOB CHRISTIE
    What was billed as a memorial for victims of the Arizona shooting rampage turned into a rollicking rally, leaving some conservative commentators wondering whether President Barack Obama's speech was a scripted political event. Not so, insisted the White House and host University of Arizona. Obama spokesman Robert Gibbs said Thursday he and other aides didn't expect the president's remarks at the school's basketball arena to receive as much rousing applause as it did. Gibbs said the crowd's response, at times cheering and shouting, was understandable.
  • Stepping Away From the Trees For a Look at the Forest (A review of science from the last decade)

    12/17/2010 12:01:21 AM PST · by neverdem · 3 replies · 1+ views
    Science ^ | 17 December 2010 | The News Staff
    Vol. 330 no. 6011 pp. 1612-1613 DOI: 10.1126/science.330.6011.1612 News IntroductionTen years ago, Karl Deisseroth was stuck. A psychiatrist and neuroscientist, he wanted to learn how different brain circuits affect behavior—and what went awry in the brains of his patients with schizophrenia and depression. But the tools of his trade were too crude: Electrodes inserted into the brain would stimulate too many cells in their vicinity. So in 2004, Deisseroth and his students invented a new tool. They inserted a gene for a light-activated algal protein into mice brains, where it entered nerve cells. By stimulating those cells with a laser,...
  • Tumour detection takes an ultrasonic leap

    10/20/2010 3:01:51 PM PDT · by neverdem · 8 replies
    Highlights in Chemical Biology ^ | 20 October 2010 | Philippa Ross
    Hollow silica nanoparticles filled with gas behave as efficient contrast agents for use in ultrasound imaging. This could improve detection of tumours in breast cancer patients, claim US scientists.Ultrasound imaging is a safe, fast and non-invasive technique used for medical diagnosis. However, one shortcoming is the inferior image contrast compared to more sophisticated magnetic resonance imaging (MRI). To improve this, radiologists use microbubble contrast agents to enhance the reflection of ultrasonic waves and therefore improve the quality of the ultrasound image, or radioactive seeds that are injected into the patient before surgery to visualise the entire tumour. However, the contrast...
  • Study: Doctors overprescribe antibiotics for respiratory infections

    09/22/2010 5:26:39 PM PDT · by decimon · 81 replies
    University of Chicago Press Journals ^ | September 22, 2010 | Unknown
    Doctors frequently misuse antibiotics when treating patients hospitalized with respiratory tract infections (RTIs), according to a study to be published in the November issue of Infection Control and Hospital Epidemiology. The study, which tracked patients in two Pennsylvania hospitals, found that doctors often use antibiotics to treat patients whose infections are known to be caused by viruses. The findings are alarming because antibiotics are not effective against viruses, and antibiotic overuse has been linked to the development of resistant bacterial strains. "[T]hese data demonstrate at least one area where antibiotics are commonly used in hospitalized patients without clear reason," write...
  • 'Naked machines' headed for airports

    01/05/2010 8:30:13 PM PST · by SoonerStorm09 · 58 replies · 3,002+ views
    Oklahoma Watchdog ^ | January 5, 2010 | Andrew W. Griffin
    OKLAHOMA CITY – Will Rogers World Airport will get full body scanners like the one at Tulsa International, though at least one area resident says the “naked machines” will be enough to keep her from flying. Following the attempted Christmas Day bombing of Northwest flight 253, the federal Transportation Security Administration has ramped up plans to make sure airline travelers are thoroughly searched and even scanned in new machines. Some travelers are not thrilled with the idea of having to go through the body scanners, or “naked machine,” as Norman resident and activist Kaye Beach calls them. “The way I...
  • Brain Imaging Sheds Light on Social Woes Related to Autism

    12/19/2009 9:28:01 PM PST · by neverdem · 14 replies · 1,094+ views
    HealthDay News ^ | Dec 18, 2009 | NA
    FRIDAY, Dec. 18 (HealthDay News) -- The brains of autistic people are less active than expected when they're engaged in self-reflective thought, a finding that helps explain autism-related social difficulties, say British researchers. Using functional MRI, they measured the brain activity of 66 males, half of whom had autism, while they were asked questions about their own or the Queen's thoughts, opinions,preferences, or physical characteristics. The researchers were particularly interested in an area of the brain called the ventromedial prefrontal cortex, which is known to be active when people think about themselves. In non-autistic volunteers, this part of the brain...
  • Metal atoms in carbon nanotubes caught on film

    12/11/2009 10:20:28 PM PST · by neverdem · 16 replies · 1,089+ views
    Chemistry World ^ | 07 December 2009 | Simon Hadlington
    In a remarkable home movie, an international team of researchers has filmed individual metal atoms as they move around and react within the confines of a carbon nanotube. As well as demonstrating the power of the imaging technique, the work has shown that the interior of carbon nanotubes may not be as inert as previously assumed.Andrey Chuvilin from the University of Ulm in Germany and colleagues trapped single atoms of the heavy metal dysprosium within hollow fullerene spheres made up of 82 carbon atoms, and enclosed a series of these dysprosium-seeded cages within single-walled carbon nanotubes, with the fullerenes stringing themselves along the...
  • Small nanoparticles bring big improvement to medical imaging

    11/22/2009 10:40:46 PM PST · by neverdem · 2 replies · 525+ views
    If you're watching the complex processes in a living cell, it is easy to miss something important—especially if you are watching changes that take a long time to unfold and require high-spatial-resolution imaging. But new research* makes it possible to scrutinize activities that occur over hours or even days inside cells, potentially solving many of the mysteries associated with molecular-scale events occurring in these tiny living things. A joint research team, working at the National Institute of Standards and Technology (NIST) and the National Institute of Allergy and Infectious Diseases (NIAID), has discovered a method of using nanoparticles to illuminate...
  • Digitized inscriptions reveal ancient messages

    11/10/2009 11:44:46 PM PST · by neverdem · 14 replies · 1,208+ views
    LA Times via sfgate.com ^ | November 8, 2009 | Duke Helfand
    Four thousand years ago, a government bureaucrat in Mesopotamia jotted down a tally of slave laborers on a clay tablet. The bureaucrat left behind the count in wedge-shaped symbols that proved hard to fully decipher with the naked eye. Until now. Researchers at the University of Southern California's West Semitic Research Project have helped uncover its hidden narrative with the aid of lighting and imaging techniques that are credited with revolutionizing the study of ancient texts. Over the last three decades, the USC project has produced thousands of crisp images of inscriptions and other artifacts from biblical Israel and other...
  • Cell invasion caught on camera - Videos show T cells breaching the central nervous...

    10/16/2009 9:14:49 PM PDT · by neverdem · 9 replies · 884+ views
    Nature News ^ | 14 October 2009 | Daniel Cressey
    Videos show T cells breaching the central nervous system's defences.A T cell (green) is seen moving with the flow of blood before crawling against it and exiting the blood vessel.Ingo Bartholomaeus et al, Nature 2009 Despite being surrounded by a supposedly unbreachable defensive line, the body's central nervous system can still be attacked by autoimmune diseases such as multiple sclerosis.Now, researchers led by Alexander Flügel, director of the Institute for Multiple Sclerosis Research at the University Medical Centre in Göttingen, Germany, have watched in real time as T cells — blood cells linked to the immune response — penetrate the...
  • In search of true stem-like cells - Live-cell fluorescence imaging identifies bona fide...

    10/11/2009 6:35:19 PM PDT · by neverdem · 3 replies · 674+ views
    Nature News ^ | 11 October 2009 | NA
    Live-cell fluorescence imaging identifies bona fide reprogrammed cells.Fluorescence imaging could help resolve whether iPS cells have been properly programmed.Alamy The next tools for reprogramming cells to an embryonic-like state might just be a camera and a set of fluorescently tagged antibodies. Researchers imaged more than a million human cells in vitro as they changed from skin tissue cells, known as fibroblasts, into colonies of induced pluripotent stem (iPS) cells. As expected, many similar-looking colonies appeared, but only very few consisted of fully reprogrammed iPS cells. After assessing which were which, researchers led by Thorsten Schlaeger and George Daley of the...
  • Gold plating improves nanotube imaging

    08/28/2009 6:04:01 PM PDT · by neverdem · 2 replies · 526+ views
    Chemistry World ^ | 23 August 2009 | Jon Cartwright
    Techniques used to image tumours and infections improve when the carbon nanotube 'contrast agents' are gold plated, researchers in the US have discovered. The gold plating reduces the nanotubes' potential toxicity while boosting their effect as contract agents, thereby allowing far fewer of them to be used for the same effect.Doctors use both photoacoustic and photothermal imaging to examine diseased tissue. The techniques involve shining a laser onto the tissue and measuring either the emitted heat - that is, the infrared radiation - or ultrasound. By adding contrast agents, such as pigmented biomolecules, the tissue responds better to the laser and...
  • Nanoparticles make 'self-erasing' images

    06/19/2009 11:45:52 PM PDT · by neverdem · 8 replies · 576+ views
    Chemistry World ^ | 19 June 2009 | Jon Cartwright
    Materials displaying 'self-erasing' colour images have been created by chemists in the US, who have studied how certain nanoparticles can assemble and disassemble themselves under different wavelengths of light.The materials, which are printed with ultraviolet (UV) light and erased with visible light, could one day be used for self-expiring bus tickets or for carrying secret messages.'Self-erasing papers are important for time-sensitive materials and secure communications,' said study leader Bartosz Grzybowski of Northwestern University in Evanston, Illinois. 'On the fundamental level, what we describe is also a very different way of looking at the concept of information storage. We're not using traditional coloured inks per se,...
  • Study gives more proof that intelligence is largely inherited

    03/18/2009 8:36:57 AM PDT · by Pharmboy · 67 replies · 2,020+ views
    UCLA/Eureka Alerts ^ | 17-Mar-2009 | Mark Wheeler
    UCLA researchers find that genes determine brain's processing speed They say a picture tells a thousand stories, but can it also tell how smart you are? Actually, say UCLA researchers, it can. In a study published in the Journal of Neuroscience Feb. 18, UCLA neurology professor Paul Thompson and colleagues used a new type of brain-imaging scanner to show that intelligence is strongly influenced by the quality of the brain's axons, or wiring that sends signals throughout the brain. The faster the signaling, the faster the brain processes information. And since the integrity of the brain's wiring is influenced by...
  • Brain imaging measures more than we think - Anticipatory brain mechanism may be...

    01/22/2009 3:50:57 AM PST · by neverdem · 7 replies · 862+ views
    Nature News ^ | 21 January 2009 | Kerri Smith
    Anticipatory brain mechanism may be complicating MRI studies. Blood vessel activation in the brain. The dark central area is the response to a visual stimulus.Y. Sirotin & A. Das Popular brain-imaging techniques may be painting a misleading picture of brain activity, according to a new study.Scientists using techniques such as functional magnetic resonance imaging (fMRI) make the assumption that blood flow into a particular brain region is directly linked to the amount of activity in the cells of that region. This is because active cells need more oxygen, and blood ferries it to them.But a study by Aniruddha Das and...
  • The Pain May Be Real, but the Scan Is Deceiving

    12/11/2008 2:46:11 AM PST · by neverdem · 18 replies · 1,421+ views
    NY Times ^ | December 9, 2008 | GINA KOLATA
    Cheryl Weinstein’s left knee bothered her for years, but when it started clicking and hurting when she straightened it, she told her internist that something was definitely wrong. But in many cases it is just not known whether what is seen on a scan is the cause of the pain. The problem is that all too often, no one knows what is normal... --snip-- As a rheumatologist, Dr. Felson saw patient after patient with knee pain, many of whom had already had scans. And he was becoming concerned about their findings. Often, a scan would show that a person with...
  • Textured graphics can be captured in a flash

    08/31/2008 12:38:12 PM PDT · by neverdem · 9 replies · 294+ views
    NewScientist.com news service ^ | 27 August 2008 | Colin Barras
    The virtual worlds in computer games provide a realistic backdrop to the action. But step too close and the effect is lost – you'll see that textures and patterns are usually displayed on flat surfaces that look dull and artificial. A simpler way to add depth to textured surfaces could change that. The new technique can reconstruct the depth of a surface simply by taking two photos of it – one with a flash and one without (see video, right). Merely analysing the resulting shading patterns can capture the surface's 3D texture. Until now making realistic textures required the use...
  • Quantum Imaging: Enhanced Image Formation Using Quantum States of Light

    08/14/2008 5:59:33 PM PDT · by Maelstorm · 14 replies · 304+ views
    http://www.optics.rochester.edu/ ^ | April 14th, 2008 | Robert Boyd
    http://www.optics.rochester.edu/workgroups/boyd/presentations/Boyd_UMD-Q-Im_08.pdf
  • Scientists Identify the Brain’s Activity Hub

    07/01/2008 8:05:21 PM PDT · by neverdem · 18 replies · 904+ views
    NY Times ^ | July 1, 2008 | BENEDICT CAREY
    The outer layer of the brain, the reasoning, planning and self-aware region known as the cerebral cortex, has a central clearinghouse of activity below the crown of the head that is widely connected to more-specialized regions in a large network similar to a subway map, scientists reported Monday. The new report, published in the free-access online journal PLoS Biology, provides the most complete rough draft to date of the cortex’s electrical architecture, the cluster of interconnected nodes and hubs that help guide thinking and behavior. The paper also provides a striking demonstration of how new imaging techniques focused on the...
  • Lost in Translation (Chinese and English speaking dyslexics have differences in brain anatomy.)

    04/11/2008 2:06:32 AM PDT · by neverdem · 18 replies · 93+ views
    ScienceNOW Daily News ^ | 8 April 2008 | Constance Holden
    All dyslexics are not alike. According to new research, Chinese- and English-speaking people with the disorder have impairments in different regions of their brains. The findings shed light on the neurological basis of dyslexia and reveal fundamental differences in how brains process the two languages. Dyslexics, about 5% to 10% of the population in both the United States and China, have trouble making the connection between the sight and sound of a word. In English, this results in word distortions or transpositions of letters. "Dyslexia," for example, might be read as "Lysdexia." In Chinese, the problem can affect how a...
  • Anti-Gun Politicians, Are You Listening?

    03/09/2008 6:44:33 AM PDT · by epow · 9 replies · 787+ views
    NRA-ILA ^ | 03/07/08 | staff
    Anti-Gun Politicians, Are You Listening? NAS Says Ballistic Imaging Database "Should Not Be Established" Friday, March 07, 2008 On March 5, the National Academy of Sciences (NAS) released Ballistic Imaging, the report of a committee it assigned to evaluate the feasibility, accuracy, and technical capability of a possible national database of so-called “ballistic” images from all new guns sold in the United States. The committee considered dozens of factors, including the uniqueness of images, the ability of imaging systems to capture images, the odds against images in a database being matched with cartridge cases and/or bullets found at crime scenes,...
  • The Camera Doesn’t Lie, but It Can Get Confused

    03/08/2008 4:35:02 PM PST · by neverdem · 9 replies · 879+ views
    NY Times ^ | March 8, 2008 | JIM DWYER
    The first camera in the room grabbed my face, put it on a screen and then began a computer analysis. It correctly identified me as male. Then the camera focused and followed my eyes, with a little box appearing around each one on the screen. Below the image, a meter displayed each emotion that the computer had detected: Happy. Sad. Angry. Surprised. A trace of a smile triggered the happy meter; a raised eyebrow sent the anger meter skyrocketing. Some tic was registered as sadness. A second camera went after solid data from the face. It measured distances from jaw...
  • Imaging Neural Progenitor Cells In The Living Human Brain

    11/18/2007 1:52:06 AM PST · by neverdem · 4 replies · 99+ views
    Science Daily ^ | Nov. 17, 2007 | NA
    For the first time, investigators have identified a way to detect neural progenitor cells (NPCs), which can develop into neurons and other nervous system cells, in the living human brain using a type of imaging called magnetic resonance spectroscopy (MRS). The finding may lead to improved diagnosis and treatment for depression, Parkinson's disease, brain tumors, and a host of other disorders. Research has shown that, in select brain regions, NPCs persist into adulthood and may give rise to new neurons. Studies have suggested that the development of new neurons from NPCs, called neurogenesis, is disrupted in disorders ranging from depression...
  • False memories show up in the brain

    11/07/2007 11:32:25 PM PST · by neverdem · 20 replies · 286+ views
    Nature News ^ | 6 November 2007 | Heidi Ledford
    Your brain can distinguish between real and fake memories, even if you can’t. Tell the truth: our brain can sometimes reveal if our memories are real or false.stockbyteIt’s a common situation: you’re embroiled in an argument over a fact and you know for certain that you have the right answer. But when someone rushes to their laptop to google the correct answer, you discover that you were wrong. Whether in a fight with a spouse or giving testimony on the witness stand, it is clear that our memories are not always trustworthy. Now, researchers have found that although those vivid...
  • Watching the Insides of a Cell

    11/16/2006 8:29:43 PM PST · by annie laurie · 5 replies · 487+ views
    Researchers at MIT's George R. Harrison Spectroscopy Lab have detected tiny twitches and vibrations in the membranes of individual cells and neurons by using a powerful and noninvasive imaging technique. Down the line, Michael Feld, director of the lab, hopes to use the technique to create three-dimensional images, illuminating even finer activities within living cells. The goal, says Feld, is to "study the structure of a living cell and the way it changes as circumstances change." Today's molecular imaging techniques come with a host of pros and cons. Among the most widely practiced techniques is electron microscopy, which creates highly...
  • Patient Obesity Is Obscuring Medical Scans

    07/25/2006 1:22:22 PM PDT · by neverdem · 113 replies · 1,568+ views
    Forbes.com ^ | 07.25.06 | NA
    TUESDAY, July 25 (HealthDay News) -- In yet another example of how obesity is playing havoc with Americans' health, a new study finds that the number of inconclusive diagnostic imaging exams has doubled in the last 15 years -- a phenomenon experts attribute to all those extra pounds. "Obesity is affecting the ability to image these people. We're having trouble finding out what's wrong," explained Dr. Raul N. Uppot, lead author of the study, and an assistant radiologist at Massachusetts General Hospital and an instructor in radiology at Harvard Medical School, both in Boston. "When they come to the hospital,...
  • Look into my mind

    07/10/2006 4:54:33 PM PDT · by annie laurie · 5 replies · 247+ views
    New Scientist / Short Sharp Science ^ | July 04, 2006 | Gaia Vince
    Ever wondered what’s going on in the tiny mind of a newborn baby, or how a footballer takes that perfect kick? Or even why brain scanning kits often look like mental torture instruments from a sci-fi B-movie? I met some researchers yesterday from University College London who are shedding light on (most of) these questions using new optical imaging systems that can probe beneath our skin. What stands out about these systems is far greater clarity – you can actually see a 3-D map of individual blood vessels and tell from the colour how oxygenated the blood is. They are...
  • Gay or Straight? The Nose Knows

    05/11/2006 4:39:41 PM PDT · by neverdem · 24 replies · 733+ views
    ScienceNOW Daily News ^ | 9 May 2006 | Laura Blackburn
    When it comes to responding to pheromonelike chemical signals, lesbian women are much more like heterosexual men than their straight counterparts, according to a new study. The findings could lead to new insights into the neural basis of sexual preference and behavior, say the researchers. Pheromones are the ultimate aphrodisiacs. Many animals use the sex-specific scents to sniff out their partner of choice. The pheromones of female moths, for example, can attract a mate from several kilometers away. Whether the substances also play a role in human mating is less clear. Potential candidates include AND, a progesterone-derived molecule found in...
  • Breakthrough in split second 3D face imaging

    03/25/2006 12:47:31 PM PST · by LibWhacker · 4 replies · 517+ views
    Face recognition technology that could revolutionise security systems worldwide has been developed by computer scientists at Sheffield Hallam University. The new specialist software can produce an exact 3D image of a face within 40 milliseconds. Similar systems that have been trialled have proved unworkable because of the time it takes to construct a picture and an inaccurate result. The ground-breaking invention, by experts in the University’s Materials and Engineering Research Institute (MERI) was tested by Home Secretary Charles Clarke on a recent visit to Sheffield. It could be used for tighter security in airports, banks, and government buildings and ID...
  • A Shocker: Partisan Thought Is Unconscious

    01/26/2006 8:02:40 PM PST · by neverdem · 19 replies · 739+ views
    NY Times ^ | January 24, 2006 | BENEDICT CAREY
    Liberals and conservatives can become equally bug-eyed and irrational when talking politics, especially when they are on the defensive. Using M.R.I. scanners, neuroscientists have now tracked what happens in the politically partisan brain when it tries to digest damning facts about favored candidates or criticisms of them. The process is almost entirely emotional and unconscious, the researchers report, and there are flares of activity in the brain's pleasure centers when unwelcome information is being rejected. "Everything we know about cognition suggests that, when faced with a contradiction, we use the rational regions of our brain to think about it, but...
  • It May Look Authentic; Here's How to Tell It Isn't

    01/23/2006 10:05:37 PM PST · by neverdem · 71 replies · 5,221+ views
    NY Times ^ | January 24, 2006 | NICHOLAS WADE
    Among the many temptations of the digital age, photo-manipulation has proved particularly troublesome for science, and scientific journals are beginning to respond. Some journal editors are considering adopting a test, in use at The Journal of Cell Biology, that could have caught the concocted images of the human embryonic stem cells made by Dr. Hwang Woo Suk. At The Journal of Cell Biology, the test has revealed extensive manipulation of photos. Since 2002, when the test was put in place, 25 percent of all accepted manuscripts have had one or more illustrations that were manipulated in ways that violate the...
  • NASA science uncovers texts of Trojan Wars, early Gospel

    05/19/2005 9:31:48 AM PDT · by mlc9852 · 104 replies · 3,168+ views
    Chicago Tribune ^ | May 19, 2005 | Tom Hundley
    OXFORD, England -- The scholars at Oxford University are not sure how it works or why; all they know is that it does. A relatively new technology called multispectral imaging is turning a pile of ancient garbage into a gold mine of classical knowledge, bringing to light the lost texts of Sophocles and Euripides as well as some early Christian gospels that do not appear in the New Testament.
  • A 3-D View of the City, Block by Block

    02/17/2005 8:08:24 PM PST · by neverdem · 15 replies · 1,045+ views
    NY Times ^ | February 17, 2005 | ANNE EISENBERG
    WHAT'S NEXT VEHICLES that move slowly down the street, pausing regularly to take photographs with remote-controlled cameras, tend to make the police a bit nervous. But one trailer loaded with imaging equipment that made its way through the streets of central Philadelphia wasn't spying - although at first, Secret Service agents had their doubts. Both the vehicle and a plane that flew over the same area were taking authorized pictures of each building and its surroundings, at the behest of the downtown improvement district. Now the terabytes of imaging data are being used to build a three-dimensional model of central...