ERPs
are a technique which has been steadily developing for the
last 35 years. This technique has very good temporal resolution. This
makes ERPs particularly useful for studying the time-course of brain
events after stimulation or in preparation for response. ERPs can be
recorded in a variety of populations, including young children, older
subjects, and patient populations.
A major advantage of ERPs is that they can be recorded in most
experimental paradigms used in cognitive psychology. A limitation of
ERPs is the difficulty of localizing the brain areas involved in their
generation. Recently, advancements in this area have been accomplished
by using realistic forward modeling of the surface-recorded activity.
This can be obtained by combining ERPs and other imaging methodologies
(e.g., magnetic resonance imaging, or MRI). Our Lab has
computer software (the EMSE package by Source-Signal Imaging, San
Diego) designed to perform this integration, as well as source analysis
of ERPs.
