Effect of links between stimulus and outcome on the evaluation process: An event-related brain potential study

ITAGAKI Shun, HIRAKI Kazuo

doi:10.5674/jjppp.1104si

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Other Title

視覚刺激と結果の組み合わせが評価過程に与える影響――事象関連脳電位による検討――
シカクシゲキトケッカノクミアワセガヒョウカカテイニアタエルエイキョウ : ジショウカンレンノウデンイニヨルケントウ

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Abstract

A relatively unknown fact is that in Japan, “O” (circle) and “X” (cross) symbolize a “good” and “bad” sign respectively. From when Japanese began understanding symbols, and links between symbols and their meanings have been hyperexperienced in their everyday lives. This study explored whether neural processing of such links in the evaluation of events is characteristic. Two gambling tasks were conducted to investigate this issue by using feedback-related negativity (FRN)--an event-related potential (ERP) component that reflects whether the outcome is good or bad. In the symbol task, we associated “O”/“X” with Gain/Loss (congruent) and Loss/Gain (incongruent). In the graphic task, we used graphics that were neutral in meaning and associated a rhombus/hexagon with Gain/Loss (rhombus gain) and Loss/Gain (hexagon gain). The results showed that the FRN was elicited by "loss" feedback in both tasks and conditions. Moreover, in the congruent condition, the FRN was smaller than that in the other conditions. This suggests that the hyper-experienced link between the symbol and event has an effect on the evaluative processing of the outcome.

Journal

Japanese Journal of Physiological Psychology and Psychophysiology

Japanese Journal of Physiological Psychology and Psychophysiology 29 (1), 21-32, 2011

Japanese Society for Physiological Psychology and Psychophysiology

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