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Open AccessArticle

Asymmetric Contributions of the Fronto-Parietal Network to Emotional Conflict in the Word–Face Interference Task

1
Department of Psychology, Sapienza University of Rome, 00185 Rome, Italy
2
Department of Psychology, Bar Ilan University, Ramat Gan 5290002, Israel
*
Author to whom correspondence should be addressed.
Symmetry 2020, 12(10), 1701; https://doi.org/10.3390/sym12101701
Received: 10 September 2020 / Revised: 11 October 2020 / Accepted: 14 October 2020 / Published: 16 October 2020
(This article belongs to the Special Issue Biological Psychology: Brain Asymmetry and Behavioral Brain)
The fronto-parietal network is involved in top-down and bottom-up processes necessary to achieve cognitive control. We investigated the role of asymmetric enhancement of the left dorsolateral prefrontal cortex (lDLPFC) and right posterior parietal cortex (rPPC) in cognitive control under conditions of emotional conflict arising from emotional distractors. The effects of anodal tDCS over the lDLPFC/cathodal over the rPPC and the effects of anodal tDCS over the rPPC/cathodal over the lDLPFC were compared to sham tDCS in a double-blind design. The findings showed that anodal stimulation over the lDLPFC reduced interference from emotional distractors, but only when participants had already gained experience with the task. In contrast, having already performed the task only eliminated facilitation effects for positive stimuli. Importantly, anodal stimulation of the rPPC did not affect distractors’ interference. Therefore, the present findings indicate that the lDLPFC plays a crucial role in implementing top-down control to resolve emotional conflict, but that experience with the task is necessary to reveal this role. View Full-Text
Keywords: fronto-parietal network; left dorsolateral prefrontal cortex; right posterior parietal cortex; word–face interference; tDCS; emotional conflict; stimulus valence fronto-parietal network; left dorsolateral prefrontal cortex; right posterior parietal cortex; word–face interference; tDCS; emotional conflict; stimulus valence
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Luca, F.D.; Petrucci, M.; Monachesi, B.; Lavidor, M.; Pecchinenda, A. Asymmetric Contributions of the Fronto-Parietal Network to Emotional Conflict in the Word–Face Interference Task. Symmetry 2020, 12, 1701.

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