AO3 - EEG

• A strength of the use of an EEG is that it is high in temporal resolution, this enables the researcher to take a real time recording of brain activity rather than a still image of the brain, as is the case with the use of a post-mortem. This means that the researcher can gain a more accurate measure of brain activity in a particular task. Therefore, providing a greater insight into the processes of the brain, such as the activity of the brain during sleep, increasing its validity as a way of studying the brain.
• However, a limitation of the use of an EEG is that it is low in spatial resolution, therefore can only provide information on general activity in the brain. It cannot pinpoint the exact source of neural activity that is involved in behaviour. Therefore, findings may be less valuable in developing our understanding than by using alternative ways of scanning the brain.