fMRI + EEG

Cards (4)

  • S: FRMI has good spatial resolution of approximately 1mm, precisely identifying active brain regions and patterns of activation over time while participants complete experimental conditions, its non invasive and is a safe technique for experiments compared to options that use radiation e.g. PET scanners
  • L: FRMI has poor temporal resolution as one image is taken every few seconds and delay in blood flow after activity, many brain processes are too fast to study, they are expensive to build and operate and also the participant needs to be still, experiments w/ body movements are not possible
  • S: EEG historically important in understanding brain activity in areas such as sleep research and medical diagnosis + its cheaper than alternatives such as FMRI and able to be used in experiments in which the participant moves
  • L: EEG poor spatial activity as pattern is sum of a large number of neurons in the cortex under the electrode, also can’t detect activity deep within the brain