The human brain is a prediction generator. Every action initiated, every piece of information stored as knowledge, virtually every thought a human has is related to a prediction – an if/then statement (these are stored like “Microsoft macros” in the human brain to repeat as needed. Consider the number of if/then statements a toddler works
through in order to perfect the art of human ambulation). The animal brain works in this capacity as well. “If I do X, then I’ll feel good.” Or, “if I do Y, then I’ll feel pain.” Guess what, humans like pleasure better than pain so the things that keep us alive generate a reward in our brain. That reward is a wash of a neurotransmitter called dopamine.
Each time the human organism participates in an activity that supports the longevity of the species the brain is washed with dopamine. Respiration is the single most important function of the human body. The second most important activity an organism can participate in is nourishment. The reward circuit is integral in keeping the human body alive.
Addiction “hijacks” the reward circuit. Through a process of prediction and reward, the human brain begins to see certain substances as acceptable strategies for dealing with life. Things that “take the edge off,” “relieve the stress,” or simply “taste or feel good.” Over time these become conditioned (albeit ineffective) life management skills.
The first step of a Twelve Step program is:
“We admitted we were powerless over [alcohol, drugs, food, people, places, things, situations, money, sex, etc.] – that our lives have become unmanageable.”
Coming to understand that a person in the throes of their addiction is totally powerless over their behavior is an important first step in the recovery process. Addiction is not an absence of will or a reflection of bad judgment, it is a process associated with neuronal pathways in the reward circuit that have been established over time. Addiction is a neurologic disorder. Addicts are as powerless over the cycle of craving that they face as they are over their own breathing. Their addiction is associated with a neurologic phenomena that they will never overcome (which is why people who relapse go crashing back to the depths of their disease). While the craving and response may never go away, addicts can learn how to live their lives in such a way to limit the triggers that set off the neurologic cascade and enjoy normal, highly productive lives. Addicts can learn how to build a defense against the first drink.
I’m proof that it works.
Next up: Your Brain on Stress…
References:
LeDoux, J. (1993). Limbic forebrain structure in emotional memory: Emotional memory systems in the brain. Behavioural Brain Research , 58 (1-2), 69-79.
Sigurdsson, T., Doyere, V., Cain, C. K., & LeDoux, J. E. (2007). Long-term potentiation in the amygdala: A cellular mechanism of fear learning and memory. Neuropharmacology , 52, 215-227.
Zull, J. (2002). The Art of Changing the Brain: Enriching the Practice of Teaching by Exploring the Biology of Learning. Sterling: Stylus.