ABSTRACT
The EEG and a derivative measure, the event-related potential, can both be observed to change with changes in behavior in “real time.” Thus, they are said to have a high degree of temporal resolution with regard to ongoing behavior because they occur simultaneously. The EEG was briefly described in chapter 3 and was discussed further in chapters 4 and 5. The event-related potential (ERP) was described in chapters 6, 7, and 8. Another measure that has a high degree of temporal resolution with regard to behavior in progress is the magnetoencephalogram (MEG), a measure that is described later in this section. Psychophysiologists are increasingly utilizing brain-imaging techniques that, although they do not have the same temporal resolution as the EEG or ERP, provide excellent spatial localization of brain structures involved in various behaviors. These neuroimaging techniques enable scientists to determine brain areas that become active during different behaviors.
