Retina Today - The Portable Eye Examination Kit (November/December 2013) A smartphone-based system brings ophthalmic diagnostic tests to remote settings. By Callan Navitsky, Senior Editor According to the World Health Organization, an estimated 285 million people worldwide are visually impaired, and 39 million are blind. About 90% of individuals with visual impairment live in developing countries, and 80% of all visual impairment is avoidable or curable. Therefore, access to proper diagnostics and treatment inarguably remains a great need for many populations. Recognizing that, in many low-income countries, more people have access to mobile phones than to running water, Andrew Bastawrous, BSc (Hons), MB ChB, FHEA MRCOphth, of the International Centre for Eye Health, London School of Hygiene and Tropical Medicine, saw an opportunity to bring eye care to these underserved patient populations via a smartphone-based ophthalmic tool. In his career as an ophthalmologist and research fellow, Dr. As Dr. Dr. Together with Dr. In 2011, Dr. Dr. As Dr.
DARPA Wants to Hack Your Brain The secretive U.S. military research division DARPA has announced plans to create a device that could accelerate learning in the human brain. The targeted neuroplasticity training (TNT) program uses a method that claims to be able to improve cognitive skills by stimulating peripheral nerves. "Recent research has shown that stimulation of certain peripheral nerves, easily and painlessly achieved through the skin, can activate regions of the brain involved with learning," said TNT program manager Doug Weber. "This natural process of synaptic plasticity is pivotal for learning, but much is unknown about the physiological mechanisms that link peripheral nerve stimulation to improved plasticity and learning." DARPA—which stands for Defense Advanced Research Projects Agency—already has programs underway involving the peripheral nervous system, which it hopes will eventually be used as a substitute for drugs to treat diseases and help accelerate healing.
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Your brain is particularly vulnerable to trauma at two distinct ages With the new college football season upon us, fans across the country are hoping their team could be the one crowned national champion on January 11 2016 in Glendale, Arizona’s University of Phoenix Stadium. Of course, who is ultimately successful will depend a lot on the talents of their players—and a healthy dose of luck. Oh, and let’s not forget about the coach. There are just a handful of coaches who have excelled at creating successful, sustainable programs over the course of many years. Nick Saban, Urban Meyer, Mark Dantonio and Gary Patterson come to mind. How do they do it? While all have their specific plans, I believe the most successful coaches emphasize success beyond the playing field. After all, the stakes are too high for colleges and universities to employ coaches that are not dialed into their players’ developmental needs. Rites of passage: turning boys into men Urban Meyer: the quintessential coach Why choose Urban Meyer as a case study? Color-coordinating a ‘Plan to Win’
Brain Implant Improves Thinking in Monkeys Scientists have designed a brain implant that sharpened decision making and restored lost mental capacity in monkeys, providing the first demonstration in primates of the sort of brain prosthesis that could eventually help people with damage from dementia, strokes or other brain injuries. The device, though years away from commercial development, gives researchers a model for how to support and enhance fairly advanced mental skills in the frontal cortex of the brain, the seat of thinking and planning. The new report appeared Thursday in The Journal of Neural Engineering. In just the past decade, scientists have developed brain implants that improve vision or allow disabled people to use their thoughts to control prosthetic limbs or move computer cursors. The new paper, led by researchers at Wake Forest Baptist Medical Center and the University of Southern California, describes a device that improves brain function internally, by fine-tuning communication among neurons.
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Study: How experiencing awe transforms the way you treat the people around you Second Life—the online world once considered the hottest destination on the internet—never got much past a million users. But its creators think virtual-reality headsets could help give it a new lease of life. Linden Lab, the San Francisco company behind the 12-year-old role-playing game, is planning to release a similar title that will work with virtual-reality (VR) goggles like the Oculus Rift. Codenamed Project Sansar, it will begin testing with a handful of players in the coming days. The company hopes to have an alpha version available by the time Facebook-owned Oculus launches its consumer headset early next year, and to commercially release the game before the end of 2016. Some of Sansar’s rules will be slightly different, and the immersive VR graphics will be far superior (though it will still work on regular computers and mobile devices too). That means that, as with Second Life, playing Sansar will require a lot of time and investment (some of it in real money). Second act
Motorlab My Journey Many young people experience thoughts and feelings that can leave them feeling lonely and scared. They can pop up with no warning; changes in your mood, suddenly feeling anxious, withdrawn or lacking in energy can be hard for you or your loved ones to understand if you’ve never experienced those things before. They can leave you feeling isolated too, because they’re difficult to talk about. Antioxidant-rich watercress shows sports nutrition potential Healthy men consuming the green leafy vegetable had less damage to DNA and lower levels of markers of oxidative stress, a result attributed to the high antioxidant content of watercress, report researchers from Edinburgh Napier University in Scotland and the University of Ulster in Northern Ireland. “The lipid-soluble antioxidants alpha-tocopherol, gamma-tocopherol and xanthophyll were all elevated following supplementation with watercress, and, in doing so, indicates the potential for watercress to act as a source of blood-rich antioxidants,” wrote the researchers in the British Journal of Nutrition. “The increased concentration of xanthophyll following the acute dose of watercress may therefore have played a contributory role in the increased protection of lymphocyte DNA in this supplemented group.” Exercise and oxidative stress Oxygen-breathing organisms naturally produce reactive oxygen species (ROS), which play an important role in a range of functions, including cell signaling.
An fMRI study of the human cortical motor... [Magn Reson Imaging. 1997 Functional magnetic resonance imaging (fMRI) was used to study activation changes in the human primary motor-sensory areas (MAs), supplementary motor areas (SMAs), premotor areas (PMAs) and the superior and inferior parietal areas (SPAs, IPAs) during right hand finger movements as the rate, force and complexity of movement were varied. A preliminary reproducibility study of a single subject doing the same repetitive index finger movements in nine different sessions over a six week period demonstrated highly consistent and highly localized activation in the contralateral MA. ANOVAs demonstrated highly significant main effects of increasing the force and complexity of movement, thereby illustrating the distributed and integrated systemic character of the cortical motor system.
Quantum Tunnelling Currently supported Matrix Calculator Matrix AdditionMatrix SubtractionMatrix MultiplicationMatrix SquareMatrix Rank Algebra usingMatrix Inverse Matrix CalculationMatrix Ad joint Matrix Determinant Sum of Determinants Product of Determinants Developed by Ariful Haque Shisirdewflowersp@gmail.com If u find any wrong calculation or mathematical error please contact immediately at dewflowersp@gmail.com In mathematics, a matrix (plural matrices) is a rectangular array[1] of numbers, symbols, or expressions, arranged in rows and columns.[2][3] The individual items in a matrix are called its elements or entries. \begin{bmatrix}1 & 9 & -13 \\20 & 5 & -6 \end{bmatrix}. Applications of matrices are found in most scientific fields.