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maj 27, 2004
Hjärnans lilla värld
New Scientist: Small world networks key to memory:
If you recall this sentence a few seconds from now, you can thank a simple network of neurons for the experience. That is the conclusions of researchers who have built a computer model that can reproduce an important aspect of short-term memory.
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Now it looks as if working memory, which allows short-term recall of fleetingly remembered information such as phone numbers, relies on the same property [small world network]. This type of memory resides in an area at the front of the brain called the prefrontal cortex, which is involved in learning, planning and many higher cognitive functions.
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The new work may be an important step towards a theory of how the brain works. "What I really like about this system is how simple it is," says John White, a biomedical engineer at Boston University. "That means it might be possible to move from computer models to a rigorous mathematical description, which would really advance the field."
Posted by hakank at maj 27, 2004 09:00 EM Posted to Social Network Analysis/Complex Networks