• 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.
      • 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.  
      • 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.
    • Spatial resolution: Good
    • Temporal resolution: Poor
    • Expensive
    • Non-Invasive


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