Department of Clinical Psychology and Neuropsychology, Institute for Psychology, Johannes-Gutenberg University of Mainz, Germany.
Department of Clinical Psychology and Neuropsychology, Institute for Psychology, Johannes-Gutenberg University of Mainz, Germany.
Neuropsychologia. 2019 Aug;131:333-341. doi: 10.1016/j.neuropsychologia.2019.05.028. Epub 2019 May 31.
To date, it is still a matter of debate, whether valence or valence and arousal interactively foster implicit approach and avoidance tendencies, and which neural circuitries underlie these effects. To address these questions, we investigated the effects of valence and arousal on implicit approach/avoidance tendencies during fMRI in healthy volunteers (N=46). The implicit approach of positive social scenes was associated with shorter response preparation times and increased activation of the lingual, parahippocampal and fusiform gyri. Valence and arousal did not influence reaction times interactively, but we observed increased activation of prefrontal, motor, temporal, middle cingulate and parietal cortex during the approach of positive highly arousing and negative mildly arousing pictures, and the avoidance of positively mildly arousing and negative highly arousing pictures. These findings confirm the facilitation of implicit approach by positive scenes and advance our understanding regarding the neurobiological correlates of implicit approach-/avoidance biases.
迄今为止， valence（效价）和 arousal（唤醒度）是否相互作用促进内隐趋近/回避倾向，以及哪些神经回路是这些效应的基础，这仍然存在争议。为了解决这些问题，我们在健康志愿者（N=46）中进行 fMRI 研究，调查了 valence（效价）和 arousal（唤醒度）对内隐趋近/回避倾向的影响。积极社交场景的内隐趋近与反应准备时间缩短和舌回、海马旁回和梭状回的激活增加有关。效价和唤醒度没有交互影响反应时间，但我们观察到在积极高唤醒和消极低唤醒图片的趋近以及积极低唤醒和消极高唤醒图片的回避过程中，前额叶、运动、颞叶、中扣带回和顶叶皮层的激活增加。这些发现证实了积极场景对内隐趋近的促进作用，并推进了我们对内隐趋近/回避偏差的神经生物学相关性的理解。
