AS Psychology - Brain Scanning Techniques

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What is structural brain scanning?
Taking detailed pictures of the structure of the brain
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What is functional brain scanning?
It can show levels of activity in the brain
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What does CAT stand for?
Computerised Axial Tomography
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Is a CAT scan structural or functional?
Structural
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What does a CAT scan produce?
Slices of the brain
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How does the CAT scan work?
The person lies on a platform and gets moved through the scanner
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What substance is injected sometimes to make the CAT scan clearer?
Iodine
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What does PET stand for?
Positron Emission Tomography
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Is a PET scan functional or structural?
Functional
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How does a PET scan work?
The person is injected with a radioactive tracer, after 30 mins to 2 hours the person is scanned and the scanner picks up the positrons, given off by the decaying tracer, reacting with the electrons that form gamma rays
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What can PET scans be used for?
Study blood flow and size of the brain areas
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What does fMRI stand for?
Functional Magnetic Resonance Imaging
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How do fMRI scanners work?
Patients are put into a large scanner that sends a strong magnetic field through their head which causes the nuclei in the hydrogen molecules to spin a particular way which is picked up by the scanner
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What are fMRI scans used to measure?
Blood and oxygen levels
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Other cards in this set

Card 2

Front

What is functional brain scanning?

Back

It can show levels of activity in the brain

Card 3

Front

What does CAT stand for?

Back

Preview of the front of card 3

Card 4

Front

Is a CAT scan structural or functional?

Back

Preview of the front of card 4

Card 5

Front

What does a CAT scan produce?

Back

Preview of the front of card 5
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