Tortella-Feliu M, Morillas-Romero A, Balle M, Llabrés J, Bornas X, Putman P
University Institute for Research on Health Sciences, University of the Balearic Islands, KGN, Wassenaarseweg 52 2333 AK Leiden, The Netherlands.
University Institute for Research on Health Sciences, University of the Balearic Islands, KGN, Wassenaarseweg 52 2333 AK Leiden, The Netherlands.
Int J Psychophysiol. 2014 Dec;94(3):365-72. doi: 10.1016/j.ijpsycho.2014.09.003. Epub 2014 Sep 16.
Variability in both frontal and parietal spontaneous EEG activity, using α and β band power and θ/β and δ/β ratios, was explored in a sample of 96 healthy volunteers as a potential correlate of individual differences in spontaneous emotion regulation (SER). Following a baseline EEG recording, participants were asked to continuously rate their discomfort while looking at affective pictures, as well as for a period of time after exposure. Greater spontaneous β band power in parietal locations, lower frontal and parietal δ/β ratios, and lower parietal θ/β ratio were associated with lower ratings of discomfort after the offset of unpleasant pictures. Moreover, lower parietal δ/β ratio was also related to less time needed to recover from discomfort after exposure to aversive pictures, while only a greater frontal and parietal α band power appeared to be associated with faster recovery from discomfort induced by normative-neutral pictures. However, parietal δ/β ratio was the only predictor of both minimum discomfort ratings and time needed to downregulate following exposure to unpleasant pictures, and frontal α band power the only spontaneous EEG index that predicted variability in spontaneous down-regulation after the exposure to normative-neutral pictures. Results are discussed focusing on the utility of diverse spontaneous EEG measures in several cortical regions when capturing trait-like individual differences in emotion regulation capabilities and processes.
在96名健康志愿者样本中，利用α和β频段功率以及θ/β和δ/β比率，探究了额叶和顶叶自发脑电图活动的变异性，作为自发情绪调节（SER）个体差异的潜在相关因素。在进行基线脑电图记录后，参与者被要求在观看情感图片时以及观看后的一段时间内持续对自己的不适感进行评分。顶叶区域更大的自发β频段功率、更低的额叶和顶叶δ/β比率以及更低的顶叶θ/β比率，与不愉快图片消失后的较低不适感评分相关。此外，较低的顶叶δ/β比率还与接触厌恶图片后从不适感中恢复所需的时间较短有关，而只有更大的额叶和顶叶α频段功率似乎与从规范中性图片引起的不适感中更快恢复有关。然而，顶叶δ/β比率是最低不适感评分和接触不愉快图片后下调所需时间的唯一预测指标，额叶α频段功率是预测接触规范中性图片后自发下调变异性的唯一自发脑电图指标。讨论了在捕捉情绪调节能力和过程中类似特质的个体差异时，不同皮层区域的各种自发脑电图测量方法的效用。
