Key Laboratory of Cognition and Personality (Ministry of Education), Southwest University, Chongqing 400715, China.
School of Psychology, Southwest University, Chongqing 400715, China.
Nutrients. 2019 Jun 27;11(7):1450. doi: 10.3390/nu11071450.
Overweight or obesity is related to a decrease in cognitive control, especially conflict control. However, research on conflict control in overweight/obese individuals are still controversial. This study was conducted to explore general and food-related conflict control in overweight Chinese females (OWs) with a color-word Stroop task and a food-related conflict task. Event-related potentials (ERPs) were recorded during the food-related conflict task. Behavioral results showed that, OWs had a longer reaction time (RT) than normal-weight Chinese females (NWs), in both tasks. ERP results in the food-related conflict task showed that there was a reduction of N2 and N450 response strength in OWs, and the P3 and late positive component (LPC) response strength was enhanced. Results indicated that OWs might be less efficient in monitoring and resolving conflict, and OWs tended to have a higher motivational or emotional involvement in processing food-related stimuli, which was likely to contribute to their difficulty in losing weight.
超重或肥胖与认知控制能力下降有关，尤其是冲突控制能力。然而，超重/肥胖个体的冲突控制研究仍存在争议。本研究旨在使用色词斯特鲁普任务和食物相关冲突任务来探讨超重中国女性（OWs）的一般和食物相关冲突控制。在食物相关冲突任务期间记录事件相关电位（ERPs）。行为结果表明，OWs 在两个任务中的反应时间（RT）均长于正常体重的中国女性（NWs）。食物相关冲突任务中的 ERP 结果表明，OWs 的 N2 和 N450 反应强度降低，而 P3 和晚期正成分（LPC）反应强度增强。结果表明，OWs 可能在监控和解决冲突方面效率较低，并且 OWs 在处理食物相关刺激时可能表现出更高的动机或情绪投入，这可能导致他们减肥困难。
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