April 20, 2011

Addiction and Brain Circuits

From Brain Briefings:

Humans have always struggled with addictions to mind-altering substances. Yet, only in the past few decades have neuroscientists begun to understand precisely how these substances affect the brain — and why they can quickly become a destructive and even deadly habit. 

For a long time, society viewed addiction as a moral failing. The addict was seen as someone who simply lacked self-control. Today, thanks to new advances in brain imaging and other technologies, we know that addiction is a disease characterized by profound disruptions in particular routes — or circuits — in the brain.

Scientists are learning how genetics and environmental factors, such as stress, contribute to these neural disruptions and increase the risk of addiction. This ongoing research is allowing researchers to:

  • Understand how addictive substances affect the brain’s reward system.
  • Develop more effective therapies for treating drug abuse and addiction.
  • Establish better methods of detecting people at risk of developing addictions.

Click here to read the complete article.

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