Tuesday, March 4, 2008

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nicotine junkie without a brain?


nicotine-dependent smokers have similar deficits in the brain, like other addicts.


The Mainz, Aachen and Dresden scientists have found.


smokers as in the case of alcohol, cocaine or heroin addicts, the natural effect of the less than happy hormone called dopamine.


The dopamine system in the brain is a key actor in mind to find new and interesting rewards for certain triggers vorwegzunehmen.Das means that smokers choose as compared to non-smokers prefer a directly available reward, even if it turns out less than a future alternative.


The researchers also from Baylor College of Medicine in Houston, Texas establishing a playful experiment: 31 chronic smokers were playing two days long on a virtual stock market based on historical stock prices. The brain activity while running the researchers compared a sample of non-smokers a previous investigation. It was found that smokers were ignored in the learning effects . hung as opposed to the non-smokers their choice of the next move does not depend on the results of previous moves. They also understood their profits from successful moves in the classical sense as a reward.



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