Addiction Changes the Brain's Communication Pathways
A. Tom Horvath, Ph.D., ABPP, Kaushik Misra, Ph.D., Amy K. Epner, Ph.D., and Galen Morgan Cooper, Ph.D. , edited by C. E. Zupanick, Psy.D.In the previous section, we described the brain's electro-chemical communication system. This communication system sends information through a vast network of interconnecting neurons. Overtime, the brain develops a preferred or standard pathway to send signals between neurons (neural pathways). Until recently, we thought the brain's neural pathways had completely formed by the time we reached adulthood. However, because of new scientific developments we now know the brain is much more dynamic than we thought. The human brain continues to create new neurons and form neural pathways throughout our entire lifespan. Thus, neurons are dynamic cells that are constantly adapting to changing circumstances. If something damages a person's brain (such as a stroke or injury), the neurons can make new communication route around the damaged area. This ability is known as neuronal plasticity.
Scientists found that neuroplasticity regulates learning processes and helps us to adapt to our surroundings. As early as 1949, the neuroscientist Donald Hebb claimed that neurons that frequently fire together form stronger linkages. In other words, "neurons that fire together, wire together." This is one of the earliest descriptions of what we now call neuroplasticity.
To better understand neuroplasticity, an analogy may be helpful. Our brains' form neural pathways in a way that is similar to the formation of a well-traveled hiking trail. The more we travel a path, the faster, easier, and more familiar that path becomes. As we travel it more and more, it becomes wider, smoother, and easier to travel. It becomes a preferred route. The same is true of neural pathways. Overtime, the brain forms familiar neural pathways these become habitual routes. If a familiar route is blocked, the brain eventually forges a new route. Let's continue with our analogy. Suppose you walk through the woods each day to visit a friend. You use the same trail each time. One day, as you travel along your familiar path, you discover a huge tree has fallen over. It's blocking your passage. You will need to forge a new path to go around the tree. At first, this new path will be narrow, difficult, and slow. It might even be uncomfortable. Overtime, it will become a well-worn, comfortable path. It will be just as easy as the original path.
New neural pathways are formed as addiction develops. This is because addiction chemically altered the brain's communication system. When you take that drug away, the brain must again form new neural pathways. Just as when we had to forge a new trail in the woods, this is initially uncomfortable. Neuroplasticity explains why the initial period of recovery is difficult and uncomfortable. But we know from our hiking trail example, this difficulty is only temporary. This information is very helpful to know when attempting recovery. We can be successful if we preserve through this brief, uncomfortable period. Remember, it was difficult and uncomfortable to forge a new pathway around a fallen tree. The same is true for the initial period of recovery. It can be difficult and uncomfortable while these new neural pathways are forming. As long as the recovering person does not give up during this initial period of discomfort, new neural pathways will form that support recovery. These new pathways will become more established and better developed over time. As they do, recovery becomes easier and more comfortable.
We have emphasized the adaptive, dynamic qualities of our brains ensure our survival. Unfortunately, the brain's ability to be so adaptive is also at the root of addiction. The brain adapts to the strong effects of addictive drugs and activities. When it does, changes occur in the brain regions associated with reward, memory and emotion, decision-making, and stress regulation. These changes to our brain make the repeated use of addictive substances or activities very compelling. The good news is that our brains' neuroplasticity allows us to correct these changes! Therefore, although addiction leads to structural changes in the brain, we are capable of learning new coping skills. The brain's plasticity allows these new coping skills to be imprinted. We discuss these structural changes in the next section.
Resources
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Articles
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What is Addiction?
- Introduction to What is An Addiction
- Definition of Addiction
- Definiton of Addiction Continued
- The Addiction Definition Compared to Other Addiction Terms
- How Do I Know if I Have An Addiction?
- Why Don't They Just Stop? Addiction and the Loss of Control
- Is Alcoholism a Disease?
- Addiction Statistics: How Big of a Problem Is It?
- A Brief History of Alcoholism
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What Causes Addiction?
- Introduction to Causes of Addiction
- The Many Causes of Addiction and Bio-Psych-Social-Spiritual Model
- Biological Causes of Addiction
- Disease Model of Addiction and Recovery Implications
- Evolutionary Model of Addiction and Recovery Implications
- Psychological Causes of Addiction
- Learning Theory of Addiction and Recovery Implications:
- Social Learning Theory of Addiction and Recovery Implications
- Cognitive (Expectancy) Theory of Addiction and Recovery Implications
- Educational Model of Addiction and Recovery Implications
- Developmental Model of Addiction and Recovery Implications
- Sociological Causes of Addiction and the Temperance Model
- General Systems Theory of Addiction and Recovery Implications
- Sociocultural Model of Addiction and Recovery Implications
- Public Health Model of Addiction and Recovery Implications
- Moral and Spiritual Causes of Addiction
- Addiction and Personal Responsibility: A Fundamental Conflict
- Personal Responsibility and Locus of Control
- Controversies in the Addiction Field: Change Versus Acceptance
- Conflict between 12-Step Anonymous Groups and Science: A Historical Perspective
- Conflict between 12-Step Anonymous Groups and Science Continued
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How Do You Get Addicted?
- Introduction to How Do You Get Addicted?
- The Biology of Addiction and Recovery
- How Does Addiction Affect the Brain?
- Addiction Changes the Brain's Chemistry
- Addiction Changes the Brain's Communication Pathways
- Addiction Changes Brain Structures and Their Functioning
- Impaired Decision-making, Impulsivity, and Compulsivity: Addictions' Effect on the Cerebral Cortex
- Drug Seeking and Cravings: Addictions' Effect on the Brain's Reward System
- Habit Formation, Craving, Withdrawal, and Relapse Triggers: Addictions' Effect on the Amygdala
- Stress Regulation and Withdrawal: Addictions' Effect on the Hypothalamus
- The Good News: The Brain Also Helps to Reverse Addiction
- The Psychology of Addiction and Recovery
- Learning Theory and Addiction
- Classical Conditioning and Addiction
- Operant Conditioning and Addiction
- Social Learning Theory and Addiction
- Cognitive Theory and Addiction (Thoughts, Beliefs, Expectations)
- Cognitive Theory and Addiction Continued
- Cognitive-Behavioral Therapy: Improving Coping Skills
- Addiction and Other Psychological Disorders
- Developmental Theory and Addiction
- Recovery from Addiction: The Psychology of Motivation and Change
- Addiction: Social and Cultural Influences
- Addiction and Sociological Influences: Culture and Ethnicity
- Recovery from Addiction: Becoming Aware of Cultural Influences
- Recovery from Addiction: The Powerful Influence of Families
- Recovery from Addiction: Social Support
- The Spirituality of Addiction & Recovery
- The Spirituality of Addiction & Recovery Continued
- Incorporating Spirituality into Recovery from Addiction
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Signs and Symptoms of Addiction
- How Do You Know If You Have An Addiction?
- The Diagnostic Criteria for Substance Use Disorders (Addiction)
- The Diagnostic Criteria of Substance-Induced Disorders
- Alcohol-Related Disorders
- Caffeine-Use Disorders
- Cannabis-Related Disorders (Marijuana)
- Hallucinogen-Related Disorders
- Inhalant-Related Disorders
- Opioid-Related Disorders (Heroin, Oxycontin®, Vicodin® and other pain medications)
- Sedative-, Hypnotic-, Or Anxiolytic-Related Disorders
- Stimulant Use Disorder: Amphetamine Type (e.g., methamphetamine)
- Tobacco-Related Disorders
- Other Substance-Related Diagnosis and Unspecified Other Substance-Related Disorder
- Activity Addictions (Behavioral Addictions)
- Gambling Disorder (Addiction)
- Sexual Addiction and Pornography Addiction
- Other Activity (or Behavioral) Addictions: Internet Gaming Disorder (Addiction)
- Other Activity (or Behavioral) Addictions: Food Addiction
- Addiction and Other Psychological Disorders
- Addiction and Eating Disorders
- Addiction and Personality Disorders
- Addiction with Depression, Anxiety, and Compulsive Disorders
- Summary of the Diagnostic Process
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Treatment for Addiction
- Treatment for Addiction
- Natural Recovery: Recovery from Addiction Without Treatment
- Natural Recovery Continued
- Choosing An Effective Treatment Approach: Evidenced-Based Practices
- What Makes An Addictions Treatment Effective?
- Biological Approaches to Addiction Treatment: Medications
- The Role of Medication in Addictions Treatment
- Pharmacologic Medications for Addictions Treatment
- Pharmacologic Medications for Addictions Treatment: Part II
- Psychological Approaches to Addiction Treatment
- Motivation for Change: The Stages of Change Model
- Motivation for Change Continued
- Types of Evidenced-Based (Effective) Treatments for Addiction: Motivational Interviewing
- Relapse Prevention Therapy
- Contingency Management
- Cognitive-Behavioral Therapy
- Dialectical Behavioral Therapy
- Acceptance and Commitment Therapy
- What The Pros Know: The Practical Recovery Model
- Social Approaches Addictions Recovery
- A Cultural Approach to Addictions Treatment: Harm Reduction
- Family Approaches to Addictions Treatment: CRAFT, Intervention And Al-Anon
- The Social Support Approach to Addictions Recovery: Recovery Support Groups
- Self-Empowering Support Groups for Addiction Recovery: Smart Recovery
- Moderation Management
- Women for Sobriety
- LifeRing Secular Recovery
- Summary of Self-Empowering Support Groups
- Spiritual Approaches to Addiction Recovery
- 12-Step Support Groups: Groups That End With "Anonymous"
- 12-Step Support Groups: Part II
- 12-Step Support Groups: Part III
- Expanding Addiction Treatment Choices in the United States
- Developing a Personal Action Plan for Addiction Recovery: Part I
- Developing a Personal Action Plan for Addiction Recovery: Part II
- References
- Resources
- Frequentlly Asked Questions about Addiction
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What is Addiction?
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Questions and Answers
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Tests
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Book & Media Reviews
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Self-Help Groups
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Videos
- Technology Addiction
- Why People Can Become Addicted to Opioids
- The Swiss Cheese Model of Drug Addiction
- The 7 Skills for Addiction-Free Living: Alternatives to Substance Abuse
- Teen Drug Use: 2014 Monitoring The Future Survey Results
- Sex and Gender Differences of Importance to Addiction Science
- How to Tell if a Loved One is Abusing Opioids
- Why Addiction is a “Disease” and Why Is It Important
- NIDA Emerging Drugs-Methylone and Molly
- Designed to Drink? The Genetics of Alcoholism
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39 more
- Women and Addiction: Why Gender Matters
- Designed to Drink? The Genetics of Alcoholism
- Gaming disorder: questions and answers
- ADHD & Risk of Adult Drug Use
- Energy Drink Sparking More ER Visits
- Why are Drugs So Hard To Quit
- Anyone Can Become Addicted to Drugs
- Substance Use: Addiction Theories New Treatments and the Role of Doctoring in Society
- The Impact of Changing Social Behaviors on Teen Drug Use
- Teen Substance Use
- Cannabis Effects on Driving Performance
- Epidemiology of Tobacco Use
- Addiction: Learning to Forget
- Addiction: What Can I Do About It?
- Addiction: Treat It Like a Disease
- Addiction: What Is It?
- One in 4 People Prescribed Opioids Progresses to Longer-Term Prescriptions
- NIDA’s Dr. Phil Skolnick discusses intranasal naloxone
- "Eyes On" Research in Drugged Driving
- How Will Anti-Drug Vaccines Be Used? An Interview With Dr. Thomas Kosten
- Opioid Use in Pregnancy: A Community’s Approach
- Naloxone Rescue Kits
- Living Without Fear
- What You Need to Know About Internet Addiction
- Hooked, Hacked, Hijacked: Reclaim Your Brain from Addictive Living
- The Neuroscience of Internet Addiction
- Internet Addiction: Signs You Need to Shut Down
- What the Internet is Doing to Our Brains
- Addressing Suicidal Thoughts and Behaviors in Substance Abuse Treatment
- The Reward Circuit: How the Brain Responds to Cocaine
- The Reward Circuit: How the Brain Responds to Methamphetamine
- The Reward Circuit: How the Brain Responds to Marijuana
- The Reward Circuit: How the Brain Responds to Natural Rewards and Drugs
- Mindfulness-Based Relapse Prevention (MBRP) for Addictions Video (vol. 1)
- Mindfulness-Based Relapse Prevention for Addictions (vol. 2)
- Prescription Opioid Misuse
- Substance Use Disorders/Addictions - Clinical Overview
- Addiction in the Elderly
- Teenagers, ADHD, and Substance Abuse
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