Editing Event-related potential (section)

====Spatial and temporal resolution====

ERPs provide excellent [[temporal resolution]]—as the speed of ERP recording is only constrained by the sampling rate that the recording equipment can feasibly support, whereas [[hemodynamic]] measures (such as [[fMRI]], [[Positron emission tomography|PET]], and [[functional near infrared spectroscopy|fNIRS]]) are inherently limited by the slow speed of the [[Blood-oxygen-level dependent|BOLD]] response. The [[spatial resolution]] of an ERP, however, is much poorer than that of hemodynamic methods—in fact, the location of ERP sources is an [[inverse problem]] that cannot be exactly solved, only estimated. Thus, ERPs are well suited to research questions about the speed of neural activity, and are less well suited to research questions about the location of such activity.<ref name="Luck" />