Discovery

A frequent commentary chronicling the creative and intellectual
excitement of discovery at Washington State University.

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Posts Tagged ‘Joe Harding’

Remember that memory story…

If you enjoyed reading my WSM story on memory, check out this article from Monday’s New York Times. It gets into one of the deepest questions about memory, which is, how and when does the brain select which memories to keep and which to discard? We take in far more information every day than we can remember, and since our brains are of finite size, they can’t retain a record of everything.

New York Times article on memoryThe memories with the greatest staying power, says WSU psychologist Jay Wright, are those that are important to us personally, especially those with a strong emotional element. Such memories seem to be engraved so deeply in our minds that we can vividly recall a moment that occurred decades ago, even if we haven’t thought about it for years.

But scientists don’t know how that happens. The brain records many things in short-term memory but only a few make it into long-term storage. The hypothesis is that the brain has a mechanism to strengthen the synapses, or active connections between nerve cells, that encode memories that the brain deems to be worth keeping longer.

The work described in the NYT article is a big step in understanding that process. Researchers at the SUNY Downstate Medical Center in Brooklyn, working with rats, have identified a protein that accumulates in heavily-used nerve endings, those that receive a lot of input from other neurons. The protein probably has something to do with stabilizing those synapses and creating long-term memories, because the scientists have also found that a drug that interferes with the protein destroys the memory of something the rats had learned weeks or months ago.

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