Program

Poster
PS27P-02-140

The conflict adaptation effect and response preparation: an Event-Related Potential and Lateralized Readiness Potential study.

[Speaker] Nishimoto, Mika:1
[Co-author] Miyatani, Makoto:1, Nakao, Takashi:1
1:Hiroshima University (Japan)

The conflict adaptation effect reflects human cognitive control. In stimulus-response compatibility tasks, the current trial interference effect is affected by previous trial compatibility. Such trial-to-trial compatibility effects are explained by previous conflicts driving a cognitive control system, and then improving selective attention in the current trial. We focused on the relationship between this cognitive control and response process in the human brain. We studied the effect in a Stroop task using event-related potential (ERPs). In ERPs, the N1 component showed conflict adaptation effect-like differences; in reaction time, there were individual differences. We found that differences correlated to response preparation (LRPs), but the correlation is only in preparation for the correct response of compatible trial. Date suggest that the response process relates to the cost of performance, and response preparation was out of the cognitive control system, including the attentional control that N1 result of this study showed.
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