Faculty of Psychology, Southwest University, No. 2 Tiansheng Road, Chongqing, China.
Department of Psychology, University of Macau, Taipa, 999078, Macau S.A. R, People's Republic of China.
Brain Imaging Behav. 2021 Apr;15(2):906-916. doi: 10.1007/s11682-020-00300-y.
Restrained eating is a popular weight loss strategy for young women that tends to have limited effectiveness over extended periods of time. Although previous studies have explored and identified possible personality and behavior differences between successful and unsuccessful restrained eaters (REs), there has been a paucity of research on neurophysiological differences.Towards addressing this gap, we assessed brain resting state (Rs) differences in groups of unsuccessful REs (N = 39) and successful REs (N = 31). In line with hypotheses, unsuccessful REs displayed reduced regional homogeneity in brain regions involved in cognitive control (inferior parietal lobe) compared to successful REs. Regions involved in conflict monitoring (anterior cingulate cortex) were also observed to be comparatively less active in the unsuccessful RE group. Finally, based on analyses of independent components and seed-based functional connectivity, regions involved in conflict monitoring and cognitive control, especially those localized within the frontoparietal network, showed weaker connectivities among unsuccessful REs compared to their successful counterparts.These results underscore specific brain Rs differences between successful REs and unsuccessful REs in regions implicated in cognitive control and conflict monitoring.
节食是一种流行的女性减肥策略，但在长时间内效果有限。尽管先前的研究已经探讨并确定了成功和不成功的节食者（RE）之间可能存在的人格和行为差异，但对神经生理学差异的研究却很少。为了弥补这一空白，我们评估了不成功的节食者（N=39）和成功的节食者（N=31）两组的大脑静息状态（Rs）差异。与假设一致，与成功的节食者相比，不成功的节食者在参与认知控制的大脑区域（顶下小叶）的局部一致性降低。在不成功的节食者组中，还观察到参与冲突监测（前扣带皮层）的区域活动相对较少。最后，基于独立成分和基于种子的功能连接分析，参与冲突监测和认知控制的区域，特别是位于额顶网络内的区域，与成功的节食者相比，不成功的节食者之间的连接较弱。这些结果强调了成功的节食者和不成功的节食者之间在涉及认知控制和冲突监测的大脑 Rs 差异。
