Effects on eye-fixation-related potential of a driver's conversation and visual search

This paper describes the effects of a driver's conversation and visual search on eye-fixation-related potential (EFRP). Experiments are conducted with a driving simulator. Electroencephalogram (EEG) is performed when the participants were assigned a driving task and a cognitive task concurrently. Cognitive tasks include conversation, visual search, and manipulation of a mobile phone. EFRP is calculated by averaging the EEG waves whose offsets are determined by saccadic eye movements. The amplitude of the EFRP signal is used for estimating the level of a driver's distraction. The results show that the amplitude of lambda response in EFRP decreases when considerable attention is required to execute a cognitive task. Simulation results using the obtained ERRP data are also discussed.