EEG has been useful in studying the stages of sleep and in the diagnosis of conditions such as epilepsy, a disorder characterised by random bursts of activity in the brain that can easily be detected on screen.
Unlike FMRI, EEG technology has extremely hightemporal resolution.
Today's EEG technology can accuratelydetectbrain activity at a resolution of a singlemillisecond
This shows the real-worldusefulness of the technique.
Limitation:
The main drawback of EEG lies in the generalisednature of the informationreceived (that of many thousands of neurons).
The EEG signal is also not useful for pinpointing the exactsource of neural activity. Therefore it does not allow researchers to distinguishbetweenactivitiesoriginating in different but adiacentlocations.