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Christmas News: Science discovers piece of brain that helps us when we have to make choices.

Dec 2nd 2013 at 2:35 AM

Science discovers piece of brain that helps us when we have to make choices
Scientists have discovered that a very small and already very old part of the brain that was previously only associated with depression and avoidant behavior also plays a role in making decisions.

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The researchers made their discovery in experiments on rats. They taught the animals to choose between a small reward and a large reward. As expected, the rats chose prefer for a great reward. Only if they had to wait a long time for their big reward, they chose the small reward.

Randomness researchers then switched to a specific part of the brain out. It was the part known as the lateral habitual.
This part is associated with depression and avoidance behavior. The researchers thought that elimination of this part of the brain would result in the rats frequently chose a larger, riskier reward. But that was not the case. Instead, the rats started to use completely random choice, in other words, they did no longer in a position to be able to decide which choice was the best.
In evolutionary terms, the part of the brain that allegedly would play in making choices is one of the oldest parts of the brain an important role.

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