Psychology-Biopsychology: Brain Scanning/Imaging

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  • Created by: tonishax
  • Created on: 15-09-23 11:22
Brain Scanning refers to a set of _________ for producing ______ of brain ______ and ______ without having to ___ the ____?
a set of technologies for producing images of the brain structure and function without having to open the skull
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What are the three main types of scans?
CAT/CT
PET
fMRI
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When a person is scanned, they generate what type of image?
cross sectional
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But in different?
ways
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CAT SCAN
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PRO- they are ____ and ____?

CON-they only show brain ____ and not ______?
they are fast and cheap

they only show brain structure and not activity
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What do they use to create the image?
x rays
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The images are then developed on a _____ _____?
sensitive film
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PET SCAN AND fMRI SCAN
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PRO-shows the brain ______

CON-they take _____ and cost ___
shows brain activity
take longer and cost more
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PET SCAN
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What does PET stand for?
positron emission tomography
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Firstly, radioactive material is ______ or _____?
injected or inhaled
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What are four examples of radioactive materials?
oxygen
fluorine
carbon
nitrogen
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When this material gets into the ?
bloodstream
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It goes to the areas?
of the brain that use it
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This means that ____ and _____ will accumulate in the areas of the brain that are _______ active
oxygen and glucose will accumulate in the areas of the brain that are metabolically active
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This then releases what rays?
gamma rays
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A gamma ray detector will then?
record the area of the brain that releases the gamma rays
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This gives scientists an idea?
of the function of the brain
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So it generates images of brain activity by tracking the uptake of?
glucose
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fMRI SCANS
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This generates an image of the brain _____ and ______ by tracking the movement of ____ or ____?
image of the brain structure and activity by tracking the movement of water or blood
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MRI SCAN
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What does MRI stand for?
magnetic resonance imaging
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MRI uses the detection of what signals?
radio frequency signals
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To show the what of the brain?
structure
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This method cannot be used with what types of patients (3)?
claustrophobic patients
patients who cant lie still
patients with metallic devices e.g. pacemaker
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What is spatial resolution?
how much fine detail is shown in the image
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What is temporal resolution?
how well scanners track changes in brain activity overtime
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What four bits of important evidence is there?
Raine et al. (1997)
Hirvonen et al. (2011)
Gazer et al. (2000)
Carlsson et al (2000)
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RAINE ET AL. (1997)
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What scans did this use?
PET
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Who were they comparing?
murderers with ordinary people
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What were the findings?
That murderers had different patterns of brain activity
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In what two areas of the brain?
forebrain
limbic system
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HIRVONEN ET AL. (2011)
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What scans did they use?
PET
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They were investigating changes to they brain due to what?
long term cannabinoid drug users
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GAZER ET AL. (2000)
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What scans did they use?
MRI
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They wanted to show that patients with?
schizophrenia
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Had reduced?
volumes of brain tissue
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CARLSSON ET AL. (2000)
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They used a range of ______ and brain _____?
range of studies and brain imaging
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They wanted to show that schizophrenia is related to what?
abnormalities in the brain system
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That use _____ and _____ as the main _______?
use dopamine and glutamate as the main neurotransmitters
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Other cards in this set

Card 2

Front

What are the three main types of scans?

Back

CAT/CT
PET
fMRI

Card 3

Front

When a person is scanned, they generate what type of image?

Back

Preview of the front of card 3

Card 4

Front

But in different?

Back

Preview of the front of card 4

Card 5

Front

CAT SCAN
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PRO- they are ____ and ____?

CON-they only show brain ____ and not ______?

Back

Preview of the front of card 5
View more cards

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