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Why Is the Human Brain So Efficient?

nautil.us

The human brain vs. the computer

When we contemplate which has more problem-solving power, the brain or the computer, we might think that the modern computer would come out on top. Indeed, computers have been built and programmed to beat human masters in complex games, such as chess.

However, humans still trump comput...

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Comparing the computer and the brain has been instructive to both computer engineers and neuroscientists.

  • Computers are faster with basic operations, at a speed of 10 billion operations per second, while the brain can perform at about a thousand basic operations per ...

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The brain is not slow nor imprecise in performing calculations.

For example, a professional tennis player can follow the trajectory of a tennis ball after it is served at speed as high as 160 miles per hour, move to the best spot, position his arm, and swing the racket...

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The brain takes advantage of the large number of neurons (100 billion neurons) and the large number of connections each neuron makes. (100 trillion synapses)

Each neuron collects inputs from and sends output to many other neurons. At the same time, many neurons that work on the sa...

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In the signaling mode of their elementary units, the computer and the brain have similarities and differences. The transistor in a computer employs digital signaling, which uses zeros and ones to represent information. The brain uses digital as well as analog signaling

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Over the years, engineers have taken inspiration from the brain to improve computer design.

The principles of parallel processing and use-dependent modification of connection strength have been incorporated into modern computers, for example, increased parallelism such as the use of mu...

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