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A cap that administers electrical stimulation and monitors brain waves for a visual working memory test at one of the school's laboratories on April 5, 2019. A study released on Monday finds that zapping the brains of people over 60 with a mild electrical current improved a form of memory enough that they performed like people in their 20s. (Rob Reinhart/Boston University via AP)
Sign up for new weekly newsletter Closing Arguments to get the latest about ongoing trials, major litigation and hot cases and rulings in courthouses around the U.S. and the world.