Teens indulging in risky activities have a mature brain.Byline: ANI
Washington, Aug 26 (ANI): Teenagers who indulge in dangerous activities have a more mature brain as compared to their less adventurous peers, according to according to
1. As stated or indicated by; on the authority of: according to historians.
2. In keeping with: according to instructions.
3. a new brain imaging study.
The study, which focused on teen behaviour, found that adolescents with risky behaviour have frontal white matter tracts that are more adult in form than their more conservative peers.
The brain goes through a course of maturation during adolescence, and does not reach its adult form until the mid-twenties.
According to a long-standing theory of adolescent behaviour, this delayed brain maturation is the cause of impulsive and dangerous decisions in adolescence.
But, the new study, which used a form of magnetic resonance imaging magnetic resonance imaging (MRI), noninvasive diagnostic technique that uses nuclear magnetic resonance to produce cross-sectional images of organs and other internal body structures. (MRI 1. (application) MRI - Magnetic Resonance Imaging.
2. MRI - Measurement Requirements and Interface. ) called diffusion tensor imaging Diffusion tensor imaging (DTI)
A refinement of magnetic resonance imaging that allows the doctor to measure the flow of water and track the pathways of white matter in the brain. (DTI Diffusion tensor imaging (DTI)
A refinement of magnetic resonance imaging that allows the doctor to measure the flow of water and track the pathways of white matter in the brain. ) to measure structural changes in white matter in the brain, has questioned the above theory.
Emory University Emory University (ĕm`ərē), near Atlanta, Ga.; coeducational; United Methodist; chartered as Emory College 1836, opened 1837 at Oxford. It became Emory Univ. in 1915 and in 1919 moved to Atlanta. and Emory School of Medicine neuroscientists wanted to better understand the relationship between high risk-taking and the brain's development.
"In the past, studies have focused on the pattern of gray matter density from childhood to early adulthood. With new technology, we were able to develop the first study looking at how development of white matter relates to activities in the real world," said Dr. Gregory Berns.
Gray matter is the part of the brain made up of neurons, while white matter connects neurons to each other. As the brain matures, white matter becomes denser and more organized. Gray matter and white matter follow different trajectories. Both are important for understanding brain function.
The study enrolled 91adolescents ages 12 through 18 over a three-year period.
The researchers measured the levels of engagement in dangerous behaviours via a survey that included questions about the teens' thrill seeking behaviours, reckless behaviours, rebellious behaviours and antisocial antisocial /an·ti·so·cial/ (-so´sh'l)
1. denoting behavior that violates the rights of others, societal mores, or the law.
2. denoting the specific personality traits seen in antisocial personality disorder. behaviours.
DTI was used to measure corresponding structural changes in white matter.
"We were surprised to discover that risk-taking was associated with more highly-developed white matter - a more mature brain. We were also surprised to learn that except for slightly higher scores in risk-taking, there was no significant difference in the maturity of the white matter between males and females," said Berns.
Berns has suggested that doing adult-like activities requires sophisticated skills.
The study's findings have been published in the journal PLoS ONE. (ANI)
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