刺激特性の異なるStop-signal課題の遂行成績と事象関連電位からみた定型発達成人の反応制御過程の検討  [in Japanese] A neurocognitive study of response control processing during the Stop-signal task under the different visual stimulus conditions in typically development adults  [in Japanese]

Access this Article

Search this Article

Author(s)

Abstract

<p>定型発達成人23名を対象に, Go刺激とStop刺激の組み合わせ (クルマ刺激条件と記号刺激条件) の異なるStop-signal課題遂行時の反応制御過程について, 刺激条件の違いが遂行成績やERPに及ぼす影響を検討した。その結果, 遂行成績では, 記号刺激条件に比べてクルマ刺激条件における正反応時の反応時間やSSRTが有意に延長し, 左右エラー率が上昇した。ERPでは, 記号刺激条件に比べてクルマ刺激条件におけるGo刺激呈示後175–225 msまでの区間でのGFPピーク値の有意な上昇, GFP潜時値の有意な延長がみられた。同様に, クルマ刺激条件におけるStop刺激呈示後175–225 msまでの区間でのGFPピーク値の有意な上昇, 230–400 msまでの区間でのGFPピーク値の有意な低下, Stop刺激への抑制成功時におけるP3振幅値の有意な低下が, それぞれみられた。以上より, Go刺激, Stop刺激ともに刺激条件, とりわけ刺激の弁別難易度が注意処理資源の配分に影響を及ぼし, その影響は遂行成績およびERP成分動態に反映されることが示唆された。</p>

<p>We examined neurocognitive process of response control during the Stop-signal task by setting up the difference of visual stimulus condition. The aim of this study was to examine how the type of Go and Stop stimuli and combination of them, related to car (the car stimulus condition) and sign (the sign stimulus condition), is reflected in behavioral performances and ERP. Twenty-three adults participated in this experiment. As a result, the reaction time (RT) and the stop signal reaction time (SSRT) was significantly prolonged in the car stimulus condition, and also the commission error rate to Go stimulus was significantly increased, than in the sign stimulus condition. In ERP, significantly higher GFP peak and longer GFP latency from 175 ms to 225 ms after the Go stimulus was onset, in the car stimulus condition. Similarly, significantly higher GFP peak from 175 ms to 225 ms after the Stop stimulus was onset, and significantly lower GFP peak from 230 ms to 400 ms after the Stop stimulus was onset, additionally the amplitude of the SST-P3 decreased in the car stimulus condition, than in the sign stimulus condition. These results suggest that the difference of the stimulus condition, especially the difficulty of the stimuli distinction, affects the attentional resource allocation to the both Go stimuli and Stop ones in the Stop-signal task. And the effects might be reflected in the both behavioral performances and ERPs.</p>

Journal

  • Japanese Journal of Clinical Neurophysiology

    Japanese Journal of Clinical Neurophysiology 46(6), 551-560, 2018

    Japanese Society of Clinical Neurophysiology

Codes

  • NII Article ID (NAID)
    130007527794
  • Text Lang
    JPN
  • ISSN
    1345-7101
  • Data Source
    J-STAGE 
Page Top