fMRI
- Created by: 0045253
- Created on: 31-05-22 15:55
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- Functional magnetic
resonance imagining (fMRI)
- technique
for measuring changes in brain activity while a person performs a task.
- It
works by detecting changes in blood oxygenation and flow that indicate
increased neural activity
- As a result of these changes in blood flow researchers are able to produce maps showing which areas of the brain are involved in a particular activity.
- It
works by detecting changes in blood oxygenation and flow that indicate
increased neural activity
- STRENGTH
- P - A strength of fMRI is it is an non-invasive
technique
- E - fMRI
does not rely on the use of radiation or cause any damage to individuals. This
means that people are more likely to use fMRI over some other ways of studying
the brain
- E - Good
spatial resolution: fMRI produces 3D images. They have high spatial resolution
and provide information on localisation.
- L - This means that fMRI is able to show which parts of the brain are activated in a particular mental process.
- E - Good
spatial resolution: fMRI produces 3D images. They have high spatial resolution
and provide information on localisation.
- E - fMRI
does not rely on the use of radiation or cause any damage to individuals. This
means that people are more likely to use fMRI over some other ways of studying
the brain
- P - A strength of fMRI is it is an non-invasive
technique
- WEAKNESS
- P -
A weakness of fMRI is that they
are expensive compared to other techniques.
- E -
They can only capture a clear image if the person stays
still.
- E - Additionally,
it has poor temporal resolution: fMRI
has approximately a 5 second time-lag between task and neural activity.
- L - This means that it can be difficult to assess exactly what kind of brain activity is being represented on screen.
- E - Additionally,
it has poor temporal resolution: fMRI
has approximately a 5 second time-lag between task and neural activity.
- E -
They can only capture a clear image if the person stays
still.
- P -
A weakness of fMRI is that they
are expensive compared to other techniques.
- Spatial resolution: Good
- Temporal resolution: Poor
- Expensive
- Non-Invasive
- technique
for measuring changes in brain activity while a person performs a task.
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