Blueprint for an artificial brain: Physicist takes nature as his model

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At phys.org


A nanocomponent that is capable of learning: The Bielefeld memristor built into a chip is 600 times thinner than a human hair.
(image by Bielefeld University)

Memristors are made of fine nanolayers and can be used to connect electric circuits. For several years now, the memristor has been considered to be the electronic equivalent of the synapse. Synapses are, so to speak, the bridges across which nerve cells (neurons) contact each other. Their connections increase in strength the more often they are used. Usually, one nerve cell is connected to other nerve cells across thousands of synapses. Like synapses, memristors learn from earlier impulses. In their case, these are electrical impulses that (as yet) do not come from nerve cells but from the electric circuits to which they are connected. The amount of current a memristor allows to pass depends on how strong the current was that flowed through it in the past and how long it was exposed to it. 'This is all possible because a memristor can store information more precisely...

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At phys.org


 

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