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Jeffrey Iliff (left), a brain scientist at Oregon Health & Science University, has been studying toxin removal in the brains of mice. He'll work with Bill Rooney, director of the university's Advanced Imaging Research Center, to enroll people in a similar study in 2016. Courtesy of Oregon Health & Science University hide caption

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Many hospitals haven't fully implemented guidelines put forth in 2010 to minimize errors in the determination of brain death. Caiaimage/Sam Edwards/Getty Images hide caption

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Shots - Health News

Researchers Find Lapses In Hospitals' Policies For Determining Brain Death

Most hospitals don't require neurologists, neurosurgeons or even fully trained doctors to make the ultimate call.

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Age takes a toll on our internal clocks. Universal Stopping Point Photography/Getty Images hide caption

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An image from the Allen Institute's Brain Explorer shows gene expression across the human brain. Courtesy of Allen Institute For Brain Science hide caption

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Neuroscientist Takashi Kitamura works in the lab of Nobel laureate Susumu Tonegawa at the Massachusetts Institute of Technology. One of their recent projects helped identify a brain circuit involved in processing the "where" and "when" of memory. "Ocean cells" (red) and "island cells" (blue) play key roles. Takashi Kitamura/MIT hide caption

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Nazmiye Cakir, a 60-year-old "bird whistler," learned the whistled language from her grandparents, and still uses it. "The one thing you don't whistle about is your love talk," she says with a laugh, "because you'll get caught!" Gokce Saracoglu/for NPR hide caption

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No gambling here: When asked to weigh financial choices, teenagers were more likely to make careful choices than were young adults. David Chestnutt/Ikon Images/Corbis hide caption

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Can playing the Project Evo game really improve the brain's ability to deal with distractions? Its manufacturer thinks so. Courtesy of Akili hide caption

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A nanosecond pulsed laser beam starts the photoacoustic imaging process. Geoff Story/Courtesy of Washington University in St. Louis hide caption

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In this colorized image of a brain cell from a person with Alzheimer's, the red tangle in the yellow cell body is a toxic tangle of misfolded "tau" proteins, adjacent to the cell's green nucleus. Thomas Deerinck/NCMIR/Science Source hide caption

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Nurses Katherine Malinak and Amy Young lift Louis DeMattio, a stroke patient, out of his hospital bed using a ceiling-mounted lift at the Cleveland Clinic. Dustin Franz for NPR hide caption

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The Allen Cell Types Database catalogs all sorts of details about each type of brain cell, including its shape and electrical activity. These cells, taken from the visual area of a mouse brain, are colored according to the patterns of electrical activity they produce. Courtesy of Allen Institute for Brain Science hide caption

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