«Science Daily — In work published in the Proceedings of the National Academy of Sciences, a research team led by a Brown University neuroscientist describes groundbreaking recordings of activity in two brain regions during deep sleep.
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The “dialogue” they captured occurred between the hippocampus and the neocortex, areas of the brain where scientists believe memories are made and stored. The findings were startling.
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Researchers found that electrical activity in the brain cells of sleeping mice wasn’t completely random, the conclusion of past research. Instead, the team found that the slow and regular firing of excitatory cells in the neocortex was echoed a fraction of a second later in the hippocampus. The echo of cortical activity was different in the three parts of the hippocampus. Excitatory cells in the dentate gyrus showed a strong echo, while CA3 region cells showed a weak echo. Cells in the CA1 region responded in reverse, quieting down when the cortex was active.»
by
jkniiv
2007-05-05 22:26
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@research
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memory
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neocortex
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hippocampus
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dentate gyrus
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dialog
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neurology
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neurobiology
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neuroscience
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@date: 2007m03
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@y: 2007