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Workings of working memory revealed

Cognitive scientists have identified specific brain regions that work together to allow us to choose from among the options we store in working memory. Keep this in mind: Scientists say they've learned how your brain plucks information out of working memory when you decide to act. Say you're a busy mom trying to wrap up a work call now that you've arrived home. While you converse on your Bluetooth headset, one kid begs for an unspecified snack, another asks where his homework project has gone, and just then an urgent e-mail from your boss buzzes the phone in your purse. During the call's last few minutes these urgent requests -- snack, homework, boss -- wait in your working memory. When you hang up, you'll pick one and act.
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