Abstract
We investigated the effect of aroma on the event related potential(ERP)during certain cognitive workload. In this study we regard repeated oddballtask as our cognitive woridoad, while the oddball task itself is used to be considered as the cognitive task for investigating the event related potential under the auditory stimuli. We used the oddball task consisting of three kinds of tones. The oddball task used in this study was consisted of three kinds of auditory stimuli. The auditory oddball operation task was 8 min long and a total of three tasks were conducted twice at 3 min intervals. The latency of P300 during the third task of the oddball operation increased more than that of the first task. The delay of the P300 latency was thought to be related to the mental fatigue induced from the auditory oddball task. The effect of aroma on the mental fatigue induced from the auditory oddball task was studied using the aroma of lavender, rose and lemon. It was found that the delay of the P300 latency was shorter in the presence of aroma(lavender, rose and lemon)than that without the aroma These results would suggest that the presence of an aroma could be effective in reducing mental fatigue induced from the auditory oddball task.
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