Magnetic Resonance Imaging (MRI) scans allow us to map the maturation of the brain.
This image illustrates brain development through early adulthood, with blue indicating the mature state. The prefrontal cortex (white circle), which governs judgment and decision-making functions, is the last part of the brain to develop. This may help explain why teens, who are more prone to participating in risk-taking behavior, are particularly vulnerable to drug abuse.
Attention
Due to the lapse in government funding, the information on this web site may not be up to date, transactions submitted via the web site may not be processed, and the agency may not be able to respond to inquiries until appropriations are enacted. Updates regarding government operating status and resumption of normal operations can be found at
Looking for Treatment?
Use the SAMHSA Treatment Locator or 1-800-662-HELP.
Helpline open during government shutdown
Featured Publication
Drugs, Brains, and Behavior - The Science of Addiction
As a result of scientific research, we know that addiction is a disease that affects both brain and behavior.
Ordering Publications
Call 1-877-643-2644 or:
