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1 .This is Scientific American's 60-Second Science. I'm Karen Hopkin.This'll just take a minute.
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2 .Have you ever sworn that you left your phone in the car, only to find it in your pocket, or on your desk or, admit it, in the fridge.
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3 .Or maybe you just dreamed that you left it on the dashboard and the memory was so real you had to check there first.
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4 .Well, it happens to the best of us.
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5 .And, if you believe the latest research, it can happen to animals too.
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6 .Okay, critters don't misplace their electronic devices.
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7 .But researchers are finding that memory can be as tricky for some beasties as it is for us.
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8 .Take, for example, bees.
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9 .These flying foragers are renowned for their ability to remember which flowers are best and where to find them.
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10 .But it turns out bees can be bollixed.
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11 .Scientists trained bumblebees to expect a droplet of sugar water from two artificial flowers:
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12 .one that was solid yellow, the other looking like an archery target of black and white rings.
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13 .A few minutes later, the insects were allowed to choose between those two flowers and a third one that had yellow rings, a combo of the previous patterns.
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14 .In this short-term test, the bees correctly showed a preference for the petals they'd seen had the sweet stuff.
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15 .But when challenged a few days later, the bees got bamboozled.
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16 .They began selecting the yellow-ringed flower, even though it had never given them anything.
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17 .It was like their memories had merged, or so conclude the authors in their paper in the journal Current Biology.
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18 .Meanwhile, another team of researchers found they could manipulate the memories of mice while the animals slept.
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19 .As rodents skitter from here to there, what are called "place cells" in their brains record their pathways and locations.
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20 .These cells then replay these movements during sleep, helping the animals remember where they've been.
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21 .In this study, researchers used electrodes to turn on cells in the sleeping animals’ pleasure center at the same time as certain place cells lit up.
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22 .This simultaneous sleepytime stimulation essentially forged an artificial memory, linking a particular location with good feelings.
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23 .So when the mice woke up, they spent more time in the happy place of their dreams than anywhere else, even though nothing special actually happened there.
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24 .This research is in the journal Nature Neuroscience.
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25 .Both studies suggest that we all may need to take our memories with a grain of salt.
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26 .Or a dollop of nectar.
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27 .Or a nice piece of cheese.
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28 .Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.
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