AO3 - ERPs

• ERPs also have high temporal resolution, especially when compared to an fMRI. This means ERPs can identify brain activity every millisecond so researchers can see brain activity in real time. However, ERPs have poorer spatial resolution than fMRI as they can only detect brain activity in general brain areas rather than identify the specific location of brain activity.
• It can be hard to obtain meaningful data from the use of Event Related Potentials because they can be affected by external factors such as background noise which means that it can take many trials to obtain meaningful data as it hard to control these other factors. This limits the validity of ERPs as a means of studying the brain for a range of brain processes.