Reward, neural basis

Hammer M. (1997) The neural basis of associative reward learning in honeybees. Trends Neurosci. 20, 245-252. 

I Prechnical studies consistently imphcate DA systems in neural basis of reward (related to anhedonia). 

The compelling and overwhelming nature of cocaine addiction is impressive and tells us something profound about how the brain is built. It is apparently comprised of critically important internal neural systems that can produce a powerful rewarding experience usually connected to activities that are the basis for the survival of our species eating and reproduction. Drugs such as cocaine can hijack these neural processes and stimulate the brain s reward centers so excessively and unnaturally that users will crave more stimulation, as they would normally crave food and sex. From the brain s perspective, there is no real... 

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