In their research, published in the Proceedings of the National Academy of Sciences USA in October, 2006, they showed that both pure monetary rewards and charitable donations activated the mesolimbic reward pathway, a primitive part of the brain that usually lights up in response to food and sex.

In their research, published in the Proceedings of the National Academy of Sciences USA in October, 2006, they showed that both pure monetary rewards and charitable donations activated the mesolimbic reward pathway, a primitive part of the brain that usually lights up in response to food and sex.

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