Schupp Harald T, Kirmse Ursula
Department of Psychology, University of Konstanz, 78457 Konstanz, Germany.
Centre for the Advanced Study of Collective Behaviour, University of Konstanz, 78457 Konstanz, Germany.
Soc Cogn Affect Neurosci. 2021 Aug 6;17(3):300-10. doi: 10.1093/scan/nsab095.
A recent study provided first evidence that neural correlates of affective stimulus evaluation, that is, the early posterior negativity (EPN) and late positive potential (LPP), can be assessed at the individual case level. Expanding the case-by-case approach, the main aim of the present study was to explore the process of affective stimulus evaluation within the individual participant with respect to multiple emotional stimulus classes. Towards this end, each participant viewed separate blocks of low and high arousing pictures from behavior systems of predator fear, disease avoidance, and sexual reproduction. 13 out of 16 participants showed larger EPN and LPP amplitudes for higher than lower arousing stimuli for all three behavior systems. Furthermore, rather than indicating a general lack of emotional modulation, cases of non-significant EPN (N= 3) and LPP (N= 2) tests in individual participants appeared to be specific to a single emotion category. Overall, assessing the emotional modulation of the EPN and LPP across multiple behavior systems strengthens the case-by-case approach regarding an effect "common-to-all" as well as by differentiating non-significant effects within individuals in terms of a content-specific or general phenomenon. Implications for revealing a general principle of emotion functioning and biomarker development are discussed.
最近的一项研究首次提供了证据，表明情感刺激评估的神经关联，即早期后负波（EPN）和晚期正电位（LPP），可以在个体案例层面进行评估。扩展逐个案例的方法，本研究的主要目的是探讨个体参与者在多种情感刺激类别方面的情感刺激评估过程。为此，每位参与者观看了来自捕食者恐惧、疾病回避和性繁殖行为系统的低唤醒和高唤醒图片的不同组块。16名参与者中有13名在所有三种行为系统中，对于高唤醒刺激比低唤醒刺激表现出更大的EPN和LPP波幅。此外，个体参与者中EPN（N = 3）和LPP（N = 2）测试无显著差异的情况似乎并非表明普遍缺乏情绪调节，而是特定于单一情绪类别。总体而言，评估EPN和LPP在多个行为系统中的情绪调节，强化了关于“对所有人都常见”效应的逐个案例方法，以及通过在个体内部根据特定内容或一般现象区分无显著差异的效应。讨论了对揭示情绪功能的一般原则和生物标志物开发的影响。
