Midfrontal Theta and Posterior Parietal Alpha Band Oscillations Support Conflict Resolution in a Masked Affective Priming Task

Frontiers in Human Neuroscience
Jun JiangXiao Xiao

Abstract

Past attempts to characterize the neural mechanisms of affective priming have conceptualized it in terms of classic cognitive conflict, but have not examined the neural oscillatory mechanisms of subliminal affective priming. Using behavioral and electroencephalogram (EEG) time frequency (TF) analysis, the current study examines the oscillatory dynamics of unconsciously triggered conflict in an emotional facial expressions version of the masked affective priming task. The results demonstrate that the power dynamics of conflict are characterized by increased midfrontal theta activity and suppressed parieto-occipital alpha activity. Across-subject and within-trial correlation analyses further confirmed this pattern. Phase synchrony and Granger causality analyses (GCAs) revealed that the fronto-parietal network was involved in unconscious conflict detection and resolution. Our findings support a response conflict account of affective priming, and reveal the role of the fronto-parietal network in unconscious conflict control.

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Citations

Oct 6, 2020·Frontiers in Human Neuroscience·Justin MurphyGina M Grimshaw
Mar 16, 2021·Cognitive, Affective & Behavioral Neuroscience·Céline C HaciahmetBernhard Pastötter
Jan 9, 2021·Journal of Neural Engineering·Steven M PetersonBingni W Brunton
Jul 10, 2021·Frontiers in Human Neuroscience·Michaela Rohr, Dirk Wentura

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Software Mentioned

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