Take the prefrontal cortex, an area that plays a key role in levelheaded decision making and long-term goals.

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The prefrontal cortex, that's the last area of the brain to develop.

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The scientists used an EEG (electroencephalogram) to measure electrical activity in an area of the brain called the prefrontal cortex, which is involved in judgment and motivation.

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In the study, he and colleagues focused on an area of the brain called the left dorsolateral prefrontal cortex (DLPFC), which has been strongly implicated in our ability to play with numbers in our heads.

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This part of the brain is most evolved in human beings, and the area of it we are most concerned with is the prefrontal cortex.

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By measuring relative degrees of activation in the parietal lobe, an area involved in integrating visual images, and in the prefrontal cortex, where decision making takes place, Berns says, he could determine that the group changed what the reporter perceived.

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