Integrated Research and Treatment Center AdiposityDiseases, Departments of Medical Psychology and Medical Sociology and Psychosomatic Medicine and Psychotherapy, University of Leipzig Medical Center, Leipzig, Germany.
Eur Eat Disord Rev. 2019 Mar;27(2):124-136. doi: 10.1002/erv.2654. Epub 2018 Oct 25.
To provide a basis for electroencephalography (EEG) neurofeedback protocols for bulimia nervosa (BN), binge-eating disorder (BED), and obesity, this systematic review investigates alterations in EEG-measured brain activity, specifically frequency bands. A systematic literature search with predefined search terms yielded N = 7 studies meeting the inclusion criteria. The risk of bias was assessed for all studies. In resting-state EEG, the beta activity was elevated in fronto-central regions in individuals with obesity and co-morbid BED. In food-cue conditions, both obese individuals with and without BED showed increased beta activity, suggesting increased awareness of food cues and a heightened attentional focus towards food stimuli. The level of beta activity was positively correlated with eating disorder psychopathology in resting and food-cue conditions. In individuals with BN, there was no evidence for altered EEG spectral power. The results indicate specific alterations in EEG-based brain activity in individuals with BED and obesity. More high-quality studies are needed to further confirm these findings and to transfer them into EEG-based interventions.
为了为神经性贪食症（BN）、暴食症（BED）和肥胖症的脑电图（EEG）神经反馈协议提供依据，本系统综述调查了 EEG 测量的脑活动的变化，特别是频段。通过预定义的搜索词进行系统文献检索，共获得符合纳入标准的 N = 7 项研究。对所有研究进行了偏倚风险评估。在静息态 EEG 中，肥胖症和伴发 BED 的个体的额-中央区域的β活动升高。在食物线索条件下，肥胖症患者和不伴发 BED 的个体均显示出β活动增加，表明对食物线索的意识增强，对食物刺激的注意力集中。β活动水平与静息和食物线索条件下的饮食障碍心理病理学呈正相关。在 BN 个体中，没有证据表明 EEG 频谱功率发生改变。结果表明，BED 和肥胖症个体的基于 EEG 的脑活动存在特定变化。需要更多高质量的研究来进一步证实这些发现，并将其转化为基于 EEG 的干预措施。
