Biehl Stefanie C, Keil Julian, Naumann Eva, Svaldi Jennifer
1Department of Clinical Psychology and Psychotherapy, University of Tuebingen, Schleichstrasse 4, 72076 Tuebingen, Germany.
2Department of Clinical Psychology and Psychotherapy, University of Regensburg, Universitaetsstrasse 31, 93053 Regensburg, Germany.
J Eat Disord. 2020 Apr 7;8:14. doi: 10.1186/s40337-020-00290-8. eCollection 2020.
Findings are mixed regarding the association of electroencephalographic (EEG) attentional bias measures and body weight, with few studies measuring food craving or intake and no study reporting oscillatory measures.
EEG data were collected while 28 satiated adolescents (14 overweight/obese) viewed pictures of neutral, low-calorie food, and high-calorie food stimuli and rated their desire to eat, before having access to high-calorie snacks.
Unlike normal-weight adolescents, overweight/obese participants showed similar P300 amplitudes for high- and low-calorie food, and strongest event-related alpha band desynchronization for low-calorie stimuli. P300 amplitudes and state craving for low-calorie food furthermore predicted snack intake in this group.
The current research focus in overweight/obesity might need to be extended to include low-calorie food. While all participants showed an attentional bias for high-calorie food, it was the processing of low-calorie food which distinguished the two weight groups on measures of neural activity and which was associated with snack food intake in the overweight/obese group.
关于脑电图（EEG）注意力偏差测量与体重之间的关联，研究结果不一，很少有研究测量食物渴望或摄入量，且没有研究报告振荡测量结果。
在28名饱腹的青少年（14名超重/肥胖）观看中性、低热量食物和高热量食物刺激的图片并对他们想吃的欲望进行评分后，收集脑电图数据，然后让他们获取高热量零食。
与体重正常的青少年不同，超重/肥胖参与者对高热量和低热量食物的P300波幅相似，对低热量刺激的事件相关α波段去同步化最强。此外，该组中P300波幅和对低热量食物的即时渴望可预测零食摄入量。
当前超重/肥胖研究的重点可能需要扩展到包括低热量食物。虽然所有参与者都对高热量食物表现出注意力偏差，但正是低热量食物的加工在神经活动测量方面区分了两个体重组，并且与超重/肥胖组的零食摄入量相关。
