Department of Psychology, La Sapienza University of Rome, Rome, Italy.
Sci Rep. 2018 Sep 3;8(1):13154. doi: 10.1038/s41598-018-31404-7.
The revised reinforcement sensitivity theory (rRST) of personality has conceptualized three main systems: the behavioural approach system (BAS), behavioural inhibition system (BIS), and fight-flight-freeze system (FFFS). Research links greater relative left-frontal activity with BAS-related tendencies and impulsivity and greater relative right-frontal activity with "withdrawal" motivation that included both BIS and FFFS. Although rRST has addressed the separation of FFFS and BIS, much of personality neuroscience research does not indicate which system is related to right frontal activity. We administered the Reinforcement Sensitivity Theory of Personality Questionnaire (RST-PQ) to measure the BAS and its facets (goal-drive persistence, reward interest, reward reactivity, and impulsivity), BIS, and the withdrawal FFFS. We examined the association of RST-PQ traits with resting electroencephalogram (EEG) alpha-asymmetry in female participants (N = 162) by considering the influence of experimenter's gender. In the total group, that included two subgroups with experimenters of different gender, BAS-impulsivity was related to greater left- than right-frontal activity, and FFFS, but not BIS, was related to greater relative right-frontocentral activity. These associations remained significant for the subgroup with a young same-sex experimenter, but not with opposite-sex experimenter.
修订后的人格强化敏感性理论（rRST）将三个主要系统概念化：行为趋近系统（BAS）、行为抑制系统（BIS）和战斗-逃跑-冻结系统（FFFS）。研究表明，与 BAS 相关的倾向和冲动与相对左额叶活动增加有关，而与“撤退”动机相关的活动则与包括 BIS 和 FFFS 在内的相对右额叶活动增加有关。尽管 rRST 已经解决了 FFFS 和 BIS 的分离问题，但许多人格神经科学研究并没有表明哪个系统与右额叶活动有关。我们使用人格强化敏感性理论问卷（RST-PQ）来测量 BAS 及其方面（目标驱动坚持、奖励兴趣、奖励反应性和冲动性）、BIS 和撤退 FFFS。我们通过考虑实验者性别对女性参与者（N=162）静息脑电图（EEG）α不对称性的影响，研究了 RST-PQ 特征与 EEG 之间的关联。在包括具有不同性别的实验者的两个子组的总组中，BAS-冲动性与更大的左侧额叶活动有关，而不是右侧额叶活动，FFFS 与更大的相对右额-中央活动有关，但 BIS 则没有。这些关联在具有年轻同性实验者的子组中仍然显著，但在异性实验者的子组中则不显著。
