Source: New Scientist Tech — Mar. 15, 2010

Researchers at the University of Michigan in Ann Arbor have found that a memristor can behave uncannily like the junctions between neurons in the brain.

A memristor is a resistor with a memory — its resistance at any moment depends on the last voltage it experienced, so its behavior can be used to recall past voltages. This is analogous to the way a synapse’s electrical behavior is dependent on its past activity.