ERP

• WHAT DOES ERP STAND FOR?

  event related potentials
• WHAT CAN ERP DO?

  isolate brain waves that have responded to specific stimuli and therefore measure the electrical response to specific sensory/ cognitive/ motor events
• HOW DOES ERP WORK?

  electrodes placed on scalp detect neuronal activity when stimulus presented
• STRENGTHS OF ERP?

  • possible to specifically detect an area that responds to a specific stimulus and can support claim of localisation of function
  • high temporal resolution compared to fMRI
  • cheaper than MRI
• WHAT DOES IT MEAN TO HAVE HIGH TEMPORAL RESOLUTION?

  little time delay between activity and reading
• WEAKNESSES OF ERP?

  • background noise/ visual stimulation must be completely eliminated to establish valid data (requires time/ effort)
  • low spatial resolution