Institute of Psychology and Pedagogy, University of Ulm, Germany.
Department of Clinical Psychology and Psychotherapy, University of Freiburg, Germany.
Appetite. 2014 Sep;80:70-80. doi: 10.1016/j.appet.2014.04.023. Epub 2014 May 6.
The aim of the present study was to investigate an attentional bias toward food stimuli in binge eating disorder (BED). To this end, a BED and a weight-matched control group (CG) completed a clarification task and a spatial cueing paradigm. The clarification task revealed that food stimuli were faster detected than neutral stimuli, and that this difference was more pronounced in BED than in the CG. The spatial cueing paradigm indicated a stimulus engagement effect in the BED group but not in the CG, suggesting that an early locus in stimulus processing contributes to differences between BED patients and obese controls. Both groups experienced difficulty disengaging attention from food stimuli, and this effect was only descriptively larger in the BED group. The effects obtained in both paradigms were found to be correlated with reported severity of BED symptoms. Of note, this relationship was partially mediated by the arousal associated with food stimuli relative to neutral stimuli, as predicted by an account on incentive sensitization.
本研究旨在探讨暴食障碍（BED）患者对食物刺激的注意力偏向。为此，BED 组和体重匹配的对照组（CG）完成了澄清任务和空间线索范式。澄清任务表明，与中性刺激相比，食物刺激的检测速度更快，而且 BED 组的这种差异比 CG 更明显。空间线索范式表明 BED 组存在刺激参与效应，但 CG 组不存在，这表明刺激处理的早期阶段有助于区分 BED 患者和肥胖对照组。两组均难以将注意力从食物刺激中转移出来，而且这种效应在 BED 组中只是描述性地更大。两个范式中获得的效应均与报告的 BED 症状严重程度相关。值得注意的是，这种关系部分通过与中性刺激相比食物刺激引起的唤醒来介导，这与激励敏感化的解释相符。
