Why Can't a Computer Be More Like a Brain?

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Science  26 Sep 1997:
Vol. 277, Issue 5334, pp. 1934-1936
DOI: 10.1126/science.277.5334.1934

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Computer scientists may tout their machines' abilities to perform millions or billions of operations a second, but in fact, biological systems are fantastically efficient at certain types of computation, such as interpreting sensory data. Some computer scientists are now trying to build a new kind of computer that captures in silicon the "essence" of biological subsystems. So-called "neuromorphic engineers" are adapting the tricks that the nervous system has come up with over the course of evolution.