Efficiency

The human brain, it turns out, is even more efficient than previous estimates:

Fifty-seven years ago, Nobel laureates Alan Hodgkin and Andrew Huxley came up with a model to calculate the power behind electrochemical currents in neurons--a great step forward in understanding how the brain worked and how it divvied up resources. The only problem was that their subject was not a person, or even a rodent, but a giant squid. Today, researchers announced that they have found a more accurate model ...