tispol london sintef dmo master

Technology and Society 1

Brain maturation and

risk behavior

TISPOLLONDON 6th. April 2009

Dagfinn Moe (dagfinn.moe@sintef.no)Senior Research Scientist

SINTEF NORWAY

Technology and Society 2

Road conditions

Traffic situation

Vehicle

Neurobiology

Inter-aktion

”The truth about the accident” (What – How – Why)

Sociology Psychology

Human Factors

Technology and Society 3

functional Magnetic Resonance Imaging (fMRI)

Technology and Society 4

BAC:0,19 BAC: 0,14

fMRI-group in Bergen 2008The effect of alcohol on working memory

(Gundersen, Grüner, Specht and Hugdahl-2008)

Sober BAC: 0,08

Technology and Society 5

Maturation and

learning

Gogtay, Giedd, et al. (2004) Proc. Natl. Acad. Sci. USA

Technology and Society 6

Adolescent brain development can be divided into four processes:

(Giedd-2006,Toga-2006 Steinberg-2008)

ProliferationRapid growth of brain matter and new connections

Pruning Cutting away of unused or unimportant connections

MyelinationInsulating of connections to make them faster and more stable

Remodeling of the dopamin and oxytocin systemsThere is a redistribution

of dopamine and oxytocin concentration around puberty

Technology and Society 7

PRUNING AND MYELINATION”building superhighways”

Technology and Society 8

Technology and Society 9

•Learning•Memory•Emotion

THE LIMBIC SYSTEM – EMOTIONAL BRAIN”heaven and hell”

Technology and Society 10

Rat

e of

Mat

urat

ion

adolescent

“emotional” brain

“thinking” brain

Galvan et al 2006 Developmental Science

Technology and Society 11

The battle between the emotional and the thinking brain

Technology and Society 12

Criminal

safety belt

drugs-speeding

KvinneMann

0 3 6 9 12 15 18 21 24 27 30 33 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78 81 84 87 91100

Alder

25

50

75

100

125

An

tall d

rep

te o

g h

ard

t s

ka

dd

e 2

00

2-2

00

3

Men 18-25

Technology and Society 13

Adolescence is generally a period of increased impulsivity and risk-taking behaviour, but some teens might be

especially prone to engage in such behaviours.

Technology and Society 14