In the 1940s, two researchers named James Old and Peter Milner accidentally discovered how a special area of the brain is source of our cravings. The researchers implanted electrodes in the brains of mice that enabled the mice to give themselves tiny electric shocks to a small area of the brain called the nucleus accubens. The mice quickly became hooked on the sensation and would even forgo food, water, and even run across a painful electrified grid for the opportunity to continue pressing the lever that administered the shocks.. A…
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