Addictive Versus Recreational Drug Use - Why Do Some People Get Hooked?
In the quest to find the biological route of drug addiction, research at Cambridge University, UK, is revealing what makes some people more vulnerable than others. Speaking at Europe’s major neuroscience conference in Geneva today, Professor Barry Everitt described what they now believe causes the switch from occasional, ‘recreational’ use to a compulsive habit. Professor Everitt and researchers in the Cambridge lab have discovered there is a shift in the control of drug seeking behaviour in the brain. Taking drugs – for example, cocaine – generates reinforcing or ‘rewarding’ effects mediated by the ventral striatum of the brain. In some people, however, drug taking escalates to become a strong habit, difficult to relinquish, and which is eventually controlled by the dorsal striatum, a region of the brain associated with habit learning. Read More...
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