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We know this is how the brain experiences pain because of imaging studies and because patients who’ve had damage to the anterior cingulate cortex feel the sensation of pain but not its unpleasantness.
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That is, they feel pain but aren’t bothered by it (interestingly, in some people, morphine has the same effect).
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When the anterior cingulate cortex isn’t functioning, pain is still experienced but seems to lose its emotional impact and thus its motivating force.
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This finding, that the sensation of pain and the unpleasantness of pain come from distinct neurological processes that occur in different locations within the the brain, explains how a single pain stimulus can cause such subjectively different pain experiences.
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10 Sep