Itma Haag Sintef Dmo Master

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Brain maturing in adolescence leads to risk-taking behavior.

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Itma Haag Sintef Dmo Master

  1. 1. Brain maturation and risk behavior among young drivers International Traffic Medicine Association AD Den Haag 26-29 April, 2009 Dagfinn Moe SINTEF Technology and Society 1
  2. 2. Two girls, 18 years old, are on their way to school ca 0815 am in a Golf 1990 model Technology and Society 2
  3. 3. Four young people (4) were killed and one (1) seriously injured in a head on accident between a Golf 1990 model and a heavy vehicle Technology and Society 3
  4. 4. The understanding of driving behavior ”inter- and multidisciplinarity” R&D R&D Driver Behavior Brain and Behavior Neurobiology •Accident analysis Maturation- development •Behavioral studies Learning-memory systems •Psychological testing •Surveys fMRI-neuroimaging •Interviews Technology and Society 4
  5. 5. Prof. Jay Giedd Technology and Society 5
  6. 6. Technology and Society 6
  7. 7. Adolescent brain development can be divided into four processes: (Giedd-2006, Steinberg-2008, Toga-2006) Proliferation Rapid growth of brain matter and the formation of new connections within the brain Pruning Cutting away of unused or unimportant connections Myelination Insulating of brain pathways and connections to make them faster and more stable Remodeling of the dopaminergic system There is a redistribution of dopamine concentration around puberty Technology and Society 7
  8. 8. Brain maturation 5 – 20 year Gogtay, Giedd, et al. (2004) Proc. Natl. Acad. Sci. USA Technology and Society 8
  9. 9. Motor cortex, muscle activation Sensory cortex, Space Association ”CEO” Chief Executive Officer Auditory, Vision vestibular Technology and Society 9
  10. 10. THE LIMBIC SYSTEM •Learning •Memory •Emotion Technology and Society 10
  11. 11. A social neuoroscience perspective on adolescent risk-taking (L. Steinberg, Temple University, Philadelphia-2008) Puberty Remodelling (oxytocin-friends) (dopamin-reward) Cognitive control functions ”prefrontal cortex” Technology and Society 11
  12. 12. Technology and Society 12
  13. 13. Rate of Maturation limbic/amygdala prefrontal cortex adolescent Galvan et al 2006 Developmental Science Technology and Society 13
  14. 14. Conclusions about Frontal Lobe Immaturity 1. Poor judgment and difficulty thinking through consequences of behavior 2. Impulsive and emotional responses rather than logical and practical ones 3. Miscommunication with peers and adults—they miss subtle social cues, misinterpret expectations, and misread facial expressions. 4. Increased risk-taking; inappropriate actions not as inhibited as in adults Adolescence is generally a period of increased impulsivity and risk-taking behaviour, but some teens might be especially prone to engage in such behaviours. Galvan et al. (2007) Technology and Society 14
  15. 15. I think neuroscience can contribute to a more complete understanding of young drivers behavior Thank you for your attention! Technology and Society 15

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