Effects of Task-Responding Manipulations on P300 and S-R Compatibility :

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  • NISHIHIRA,Yoshiaki
    Graduate School of Comprehensive Human Sciences, University of Tsukuba
  • YOSHIDA,Yuko
    Master's Program in Health and Sport Sciences, University of Tsukuba
  • HATTA,Arihiro
    Graduate School of Comprehensive Human Sciences, University of Tsukuba
  • KANEDA,Takeshi
    Faculty of Human Development, Hakuoh University
  • KAMIJO,Keita
    Doctoral Program in Physical Education, Health and Sport Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba
  • HIGASHIURA,Takuro
    Doctoral Program in Physical Education, Health and Sport Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba
  • Kim,Seung Ryol
    Doctoral Program in Physical Education, Health and Sport Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba
  • YOSHIDA,Megumi
    Research fellow of the 21st century COE program, Graduate School of Comprehensive Human Sciences, University of Tsukuba
  • Kim,Bok Ju
    Korea National Sport University

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The purpose of this study was to examine the characteristic of the information processing within a brain reflected by EMG-RT and P300 using S-R compatibility. P300 is one component of event-related potentials and thought to reflect information processing of stimulus. We manipulated inter-stimuli interval (ISI) and stimulus intensity on four-choice response task as the factors that affected information processing. Then, we studied the effect of S-R compatibility on P300 that was evoked by somatosensory stimulus. As results of experiments, S-R compatibility and ISI had effects on EMG-RT but not on P300 latency in any tasks. However, the effect of stimulus intensity obtained in P300 latency was found in EMG-RT equally. So, it was clear that P300 latency reflected information processing of stimulus that was part of the information processing from stimulus input to response output in this experiment. Thus, in this study, it may be concluded that the effect of S-R compatibility influenced mainly response processing, except information processing of stimulus reflected by P300 latency.

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