Brain Development and Adolescence: Myths and Facts, Lecture notes of Psychology

Various myths and facts about brain development, focusing on the periods of infancy, puberty, and adolescence. Topics include synaptic density, myelination, emotional intelligence, and the need for sleep. The document also discusses the implications for education and the importance of an enriched environment.

Typology: Lecture notes

2018/2019

Uploaded on 08/17/2019

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The Learning Brain
DR JENNY WYNN
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The Learning Brain

DR JENNY WYNN

Fact or fiction?

 (^) We are born with all of the neurons that we need and never grow any more  (^) Almost all of the brain’s growth and development occurs before the age of 3 years  (^) After the age of 5 years, neurons start to die

Smart kids do stupid things. It’s a simple fact of life. Even the meekest, smartest, most obedient and sensible teenager will, at some point or another, find himself or herself facing an angry adult who shouts “What were you thinking?”

Regions of the brain

Making connections

 (^) Synaptic density – number of connections  (^) Synaptogenesis – increase in synaptic density  (^) Synaptic pruning – frequently used connections made stronger, weaker ones eliminated  (^) Visual cortex – adult synaptic density reached at 10 years  (^) Frontal cortex - adult synaptic density reached at 18 years

Magnetic Resonance Imaging (MRI)

Windows of opportunity

 (^) Adolescence is a major period of brain development  (^) Many sensitive, sometimes critical, periods  (^) Brain finds alternative pathways  (^) Infinite capacity for new learning

An enriched environment

 (^) Threshold of sensory stimulus  (^) Effects of complex environment endure through life  (^) It is never too late to learn (although it takes you longer)!

Emotional intelligence

 (^) We apparently express over 400 different emotions through our face  (^) Try the ‘Reading the mind in the eyes’ test (Simon Baron-Cohen, 2001)  (^) Teenagers particularly struggle with this test

The need for sleep

 (^) Teenagers need over 9 hours of sleep every night  (^) Teenagers tend to stay up late  (^) Sleep deprivation is linked to poor mental health  (^) During sleep the brain rehearses and stores recently learnt information

The need for sleep

 (^) https:// www.ndcn.ox.ac.uk/research/sleep-circadian-neuroscience-institute/rese arch-projects/teensleep

Risk taking

 (^) To be successful we need to take risks  (^) Can be linked to self-esteem  (^) In teenagers, decisions more about the feeling than the consequences  (^) Risky business:  (^) Alcohol  (^) Drugs  (^) Smoking  (^) Sexual activity

Left brain vs right brain

Left brain

Verbal processing Logical Sequential Rational Analytical Objective Looks at parts

Right brain

Creativity Random Intuitive Holistic Synthesizing Subjective Looks at wholes