title: Opposite effect of conflict context modulation on neural mechanisms of cognitive and affective control.
abstract: This study investigated the neural effect of conflict context modulation of cognitive and affective conflict processing by recording evoked-response potentials in cognitive and affective versions of a flanker task. By varying the proportion of congruent and incongruent trials in a block, we found different patterns of the context effect on evoked potentials during cognitive and affective conflict processing. For posterior N1 amplitude, frequent incongruent trials produced a larger effect only in the affective task. The opposite pattern of the context effect was observed for the central N450, which was enhanced by frequent cognitive but reduced by frequent affective contexts. We found similar context effect on the parietal sustained potential in both tasks. Overall, our findings suggest that cognitive and affective conflict processing engage a context-dependent attentional control mechanism but a common conflict response system.
authors.affiliation: Huaxi MR Research Center (HMRRC), Department of Radiology, West China Hospital of Sichuan University, Chengdu, China; State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, Beijing, China.
authors.forename: Taolin
authors.initials: T
authors.lastname: Chen
authors.forename: Keith Maurice
authors.initials: KM
authors.lastname: Kendrick
authors.forename: Chunliang
authors.initials: C
authors.lastname: Feng
authors.forename: Suyong
authors.initials: S
authors.lastname: Yang
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Wang
authors.forename: Xun
authors.initials: X
authors.lastname: Yang
authors.forename: Du
authors.initials: D
authors.lastname: Lei
authors.forename: Min
authors.initials: M
authors.lastname: Wu
authors.forename: Xiaoqi
authors.initials: X
authors.lastname: Huang
authors.forename: Qiyong
authors.initials: Q
authors.lastname: Gong
authors.forename: Yuejia
authors.initials: Y
authors.lastname: Luo
mesh_terms: D000293:Adolescent; D000328:Adult; D000339:Affect / Q000502:physiology*; D003071:Cognition / Q000502:physiology*; D003220:Conflict, Psychological; D004569:Electroencephalography; D005260:Female; D006801:Humans; D008297:Male; D017397:Prefrontal Cortex / Q000502:physiology; D055815:Young Adult
keywords: Affective conflict; Cognitive conflict; Event-related potentials (ERPs); N450