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...women also had to remember their weight settings and adjustments to the seats and keep track of the number of repetitions they completed, says Liu-Ambrose. "There is a lot more learning involved that may not occur if you take up a walking program," she says, noting that it took the volunteers a good two months to get comfortable with the equipment and the training regimen...
...until now, more conventional diagnostic tools, including computed tomography, magnetic-resonance imaging and X-rays have not been able to detect evidence of PTSD because their snapshots of brain activity occur too slowly. The new diagnostic procedure uses magnetoencephalography (MEG), a way of monitoring the flow of electrical signals along the brain's neural pathways from cell to cell. By using a helmet with 248 noninvasive sensors arrayed around the head, scientists can map patterns of electrical activity inside the skull and detect abnormalities. The Minnesota researchers used MEG to assess 74 U.S. veterans believed to be suffering from PTSD...
Medically speaking, what is a near-death experience? A near-death experience has two components. The person has to be near death, which means physically compromised so severely that permanent death would occur if they did not improve: they're unconscious, or often clinically dead, with an absence of heartbeat and breathing. The second component [is that] at the time they're having a close brush with death, they have an experience. [It is] generally lucid [and] highly organized. (See "The Year in Health 2009: From...
...challenging. Obviously, given that impossibility, we have to do the next best thing. If these people have no brain function, like you have in a cardiac arrest, I think that is the best, closest model we're going to have to study whether or not conscious experience can occur apart from the physical brain. The research shows the overwhelming answer is absolutely...
...commander in Afghanistan, gave an interview with ABC News in which he praised the progress that an earlier troop surge has made in securing Helmand province and taking momentum away from the Taliban. U.S. military officials have noted in the past, however, that dramatic attacks will still occur in the country despite the extra troops on the ground. Monday's commando raid seemed to prove the point. For a few hours, insecurity reigned and a bit of the government's hard-won progress slipped away. - With reporting from Shah Barakzai in Kabul...