Recording of the electrical activity produced during eye movements. EOGs have had two principal uses in deception testing. One is as a deception indicator. Some research has shown lateral eye movements have diagnostic information useful in assessing whether a person harbors concealed information. The second application is with evoked cortical potentials, which also have been used in concealed information paradigms. Brain wave activity generates very small voltages, and eye movements generate electrical potentials that interfere with these signals. EOGs are often collected for subtraction from the brain wave signals