School of Psychology, University of New South Wales, Sydney, NSW 2052 Australia.
Behav Ther. 2013 Mar;44(1):27-38. doi: 10.1016/j.beth.2012.05.005. Epub 2012 Jun 8.
The emotion of disgust has been implicated in the development and maintenance of contamination-based obsessive-compulsive disorder (OCD). In the present study nonclinical participants with high (n=26) and low (n=28) levels of OCD contamination symptoms were exposed to 2 categories of disgust stimuli (blood injury and body waste) across 4 blocks using standardized disgust images. Self-report disgust and fear were recorded, as well as cardiovascular heart rate. In both groups, an initial primary disgust reaction was observed. Self-report disgust and fear, but not heart rate deceleration, was greater in the high symptom group. The high symptom group showed reductions in heart rate deceleration, whereas the low symptom group did not. Significant differences in self-report changes across time were observed between the groups, with fear increasing to a greater extent for high contamination fearful individuals when viewing body waste images. The implications of these findings for theoretical models and clinical treatment of OCD with prominent contamination symptoms are discussed.
厌恶情绪与基于污染的强迫症（OCD）的发展和维持有关。在本研究中，使用标准化的厌恶图像，将具有高 OCD 污染症状（n=26）和低 OCD 污染症状（n=28）的非临床参与者暴露于 2 类厌恶刺激（血液损伤和身体废物）4 个阶段。记录了自我报告的厌恶和恐惧，以及心血管心率。在两个组中，均观察到最初的主要厌恶反应。高症状组的自我报告的厌恶和恐惧（但不是心率减速）更大。高症状组显示心率减速减少，而低症状组则没有。组间自我报告的变化在时间上存在显著差异，当观看身体废物图像时，高污染恐惧个体的恐惧增加程度更大。这些发现对具有明显污染症状的 OCD 的理论模型和临床治疗具有重要意义。
