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Distinguishing shyness and sociability in adults: An event-related electrocortical-neuroendocrine study

机译:区分成年人的害羞和社交能力:一项与事件相关的皮质神经电内分泌研究

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摘要

Shyness and sociability are orthogonal personality dimensions, but little is known about how the two traits are instantiated in the brain and body. Using a 3-stimulus auditory oddball task, we examined whether shyness and sociability were distinguishable on P300 event-related potentials (ERPs) in processing task-relevant, novel, and standard auditory tones in 48 young adults. ERP amplitudes were measured at four midline scalp sites (Fz, FCz, Cz, Pz). We found that shyness, but not sociability, was related to reduced frontal novelty P300 amplitudes and to high emotionality. We also found that low baseline salivary cortisol levels mediated the relation between: (a) high shyness and reduced frontal P300 amplitudes to novel tones, and (b) high shyness and high scores of emotionality. We speculate that low baseline cortisol may serve as a putative mechanism influencing central attentional states of avoidance to threat and novelty and emotional arousal in adults who are shy. (C) 2016 Elsevier B.V. All rights reserved.
机译:害羞和社交能力是正交的人格维度,但是人们对如何在大脑和身体中实例化这两个特征知之甚少。我们使用3刺激听觉怪异任务,研究了48名年轻人在处理与任务相关的,新颖的和标准的听觉音调时,是否在P300事件相关电位(ERP)上区分了害羞和社交能力。在四个中线头皮部位(Fz,FCz,Cz,Pz)测量ERP振幅。我们发现害羞而不是社交性与减少额叶新奇P300振幅和提高情绪有关。我们还发现低基线唾液皮质醇水平介导了以下之间的关系:(a)高害羞度和额叶P300振幅降低至新音调,以及(b)高害羞度和高情感分数。我们推测低基线皮质醇可能是一个可能的机制,可影响害羞成年人避开威胁,新颖性和情绪唤起的集中注意力状态。 (C)2016 Elsevier B.V.保留所有权利。

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