Chapter 3. Using More Than 10 Percent of Our Brain

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by David Myers and Nathan DeWall

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Thinking Critically About: Using More Than 10 Percent of Our Brain

Electrically probing an association area won't trigger any observable response. So, unlike the somatosensory and motor areas, association area functions cannot be neatly mapped. Does this mean we don't use them?

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Question 3.1

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In humans, the brain’s vast “association areas” sometimes produce little obvious response when electrically probed. This relative “silence” contributed to the false idea that most of our brain cells are unused.

Question 3.2

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Brain-damaged individuals demonstrate that when someone is shot in the head, there is not a 90 percent chance their brain will emerge unharmed. The large association areas in intelligent animals (such as humans) serve important purposes in processing and storing information. The whole brain is active as we think, feel, and act.