Qi Qi, Cui Ke, Luo Li, Liu Yong, Zhao Jia
School of Psychology, Hainan Normal University, Haikou 571158, China.
Adolescent Psychological Development and Education Center of Hainan, Hainan Normal University, Haikou 571158, China.
Nutrients. 2025 Jul 31;17(15):2523. doi: 10.3390/nu17152523.
Food-related memory influences appetite regulation, with memory inhibition potentially reducing cravings. While obesity is linked to inhibitory deficits, how restrained eating affects memory suppression in healthy-weight individuals remains unclear. This study examined the cognitive and neural mechanisms of food-memory suppression in young women. Forty-two female participants completed a think/no-think task with high-/low-calorie food cues while an EEG was recorded. Event-related potentials (ERPs) were assessed and time-frequency analyses (theta/beta oscillations) were performed. Restrained eaters showed reduced memory control for both food types. The ERP analysis revealed significant N200 amplitude differences between think/no-think conditions ( = 0.03) and a significant interaction between food calories and think/no-think conditions ( = 0.032). Theta oscillations differed by group, food calories, and conditions ( = 0.038), while beta oscillations reflected food-cue processing variations. In conclusion, restrained eaters exhibit distinct neural processing and attenuated food-memory suppression. These results elucidate the neurocognitive mechanisms underlying dietary behavior, suggesting that targeted interventions for maladaptive eating could strengthen memory inhibition.
与食物相关的记忆会影响食欲调节，记忆抑制可能会减少对食物的渴望。虽然肥胖与抑制缺陷有关，但在体重正常的个体中，节制饮食如何影响记忆抑制仍不清楚。本研究探讨了年轻女性食物记忆抑制的认知和神经机制。42名女性参与者在记录脑电图的同时，完成了一项针对高热量/低热量食物线索的思考/不思考任务。评估了事件相关电位（ERP）并进行了时频分析（theta/β振荡）。节制饮食者对两种食物类型的记忆控制都有所降低。ERP分析显示，思考/不思考条件之间存在显著的N200振幅差异（p = 0.03），食物热量与思考/不思考条件之间存在显著的交互作用（p = 0.032）。Theta振荡因组别、食物热量和条件而异（p = 0.038），而β振荡反映了食物线索处理的差异。总之，节制饮食者表现出独特的神经处理方式和减弱的食物记忆抑制。这些结果阐明了饮食行为背后的神经认知机制，表明针对不良饮食的靶向干预可以增强记忆抑制。
