EFFECT OF DIFFERENCES IN TASK PERFORMANCE ON ERP WAVEFORM

Abstract

We examined stimulus effect of different processing on ERP waveform and factors of individual differences in 3 male and 14 female subjects. We used a static image independent of value system and lifestyles to measure P300. As 17 subjects' ERP waveforms to a standard stimulus varied, we divided them into 2 groups. The subjects with a standard stimulus waveform similar to a target one having P300 as its peak were called Same Group and those with different waveforms were Different Group. Standard stimulus amplitude in Different Group was significantly smaller, compared with Same Group. Different Group potentially omitted attention resources distribution to a standard stimulus, and the lower attention and process of taking-in minimum stimulus alone were suggested as its factors.