TB3 Lecture 2 Brain Development

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  • Created by: mint75
  • Created on: 25-04-15 19:01

1. What effects does the environment have on the prenatal brain?

  • The PN brain is sensitive to negative and positive influences, with cortical thickness differing according to the environment
  • The PN brain is especially sensitive to negative environmental influences affecting cortical thickness
  • The PN brain is especially sensitive to positive environmental influences affecting cortical thickness
  • The environment has not shown to have an effect on the PN brain
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2. Why is the pregnant person most sensitive to radiation at this time?

  • This is the critical period of prenatal brain development, with neural proliferation and migration, migration not occuring correctly has serious effects
  • As the infants developing brain is at peak plasticity
  • As this is the period in which synaptogenesis occurs

3. What did research by Perry & Pollard (1998) show?

  • The children who suffered severe global neglect had larger brains than controls
  • The children who suffered severe global neglect had much smaller frontal occipital circumferences and growth/organisation than conrtols
  • The children who suffered severe global neglect had smaller brains than controls
  • The children who suffered severe global neglect had much larger frontal occipital circumferences and growth/organisation than conrtols

4. What fatty layer covers the axon of the neuron?

  • Myelin Sheath
  • Soma
  • Dendrites
  • Axon Sheath

5. What is a teratogen?

  • Substances that exert an adverse influence on development e.g drugs, smoking, disease and maternal stress
  • Substances that exert a positive influence on development e.g enriched environment, nutrition and exercise
  • A chemical imbalance in the pregnant body which goes on to affect the infant
  • A genetic mutation in the mother which causes future disabilitys and birth complications in the infant

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