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Samenvatting NLT hersenen en leren 6 VWO $4.28
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Samenvatting NLT hersenen en leren 6 VWO

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Samenvatting van de module hersenen en leren NLT 6 VWO

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  • July 27, 2023
  • 4
  • 2022/2023
  • Summary
  • Secondary school
  • 6
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NLT hersenen en leren
Hoofdstuk 3

CT-scan

 Veel Röntgenfoto’s, telkens vanuit een andere hoek
 Bouw van hersenen bestuderen. Met PET tumoren opsporen
 Maakt gebruik van ioniserende straling

MRI-scan

 Maakt gebruik van magneetveld → opgewekt door supergeleidende spoelen
 Waterstofatomen in lichaam richten zich naar magneetveld; Als ze terug in
grondtoestand vallen, zenden ze radiosignaal uit
 Driedimensionaal beeld van anatomie hersenen
 Mensen met metaal kunnen niet in MRI-scanner

→ Allebei kunnen ze bepalen welke delen van hersenen beschadigd zijn en ze leveren zo
informatie over relatie tussen breingebieden en functies

fMRI-scan (functionele MRI)

 Gebieden met grootste activiteit zichtbaar maken → Hogere ac viteit van zuurstof en
glucose

PET-scan

 Patiënt wordt ingespoten met moleculen waarin radioactief atoom in voorkomt →
vervalt tot stabiel atoom
 Positron botst tegen elektron → twee fotonen → schieten in tegenovergestelde
richting weg

EEG

 Elektrische stroompjes buiten het brein meten

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