Temporal dynamics of spatial attentional biases toward weight-related words among females with weight dissatisfaction

IF 2.7 3区医学 Q1 BEHAVIORAL SCIENCES Biological Psychology Pub Date : 2024-05-03 DOI:10.1016/j.biopsycho.2024.108807

Xuechen Leng , Xiaocui Yu , Yixuan Chen , Ting Wang , Fan Zhao , Chengzhi Feng , Wenfeng Feng

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Abstract

Attentional bias toward weight-related stimuli plays a crucial role in the development and maintenance of body image disturbances. However, the temporal dynamics of attentional biases responsible for the previously reported behavioral effects caused by the task-irrelevant but spatial-relevant weight-related stimuli presented in the peripheral visual field among females with high weight dissatisfaction (HWD) remain unclear. The present study combined the modified dot-probe task and event-related potentials to explore the temporal dynamics of spatial attentional biases toward weight-related words among females with HWD. The results showed significantly larger N2pc amplitudes were elicited by fat-related and thin-related words than neutral words only in the HWD group. Moreover, only fatrelated words elicited a significant P_D for the HWD group, and the P_D amplitudes were larger in the HWD group than in the control group. These findings revealed that weight-related words initially captured spatial allocation among females with HWD, and then fat-related words were actively suppressed after the initial capturing.

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体重不满意女性对体重相关词汇的空间注意偏差的时间动态变化。

对体重相关刺激的注意偏差在身体形象障碍的发展和维持中起着至关重要的作用。然而，之前有报道称，在体重高度不满意（HWD）的女性中，与任务无关但与空间相关的体重相关刺激出现在外周视野中会引起行为效应，而造成这种效应的注意偏差的时间动态仍不清楚。本研究结合改良的点探测任务和事件相关电位，探讨了体重不满意女性对体重相关词汇的空间注意偏差的时间动态。结果显示，在 HWD 组中，与胖和瘦相关的词引起的 N2pc 振幅明显大于仅与中性词引起的 N2pc 振幅。此外，在 HWD 组中，只有与脂肪相关的词语才会引起明显的 PD，而且 HWD 组的 PD 振幅要大于对照组。这些研究结果表明，与体重相关的词语最初会捕获 HWD 女性的空间分配，而与脂肪相关的词语在最初捕获后会被主动抑制。

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来源期刊

Biological Psychology 医学-行为科学

CiteScore

4.20

自引率

11.50%

发文量

146

审稿时长

3 months

期刊介绍： Biological Psychology publishes original scientific papers on the biological aspects of psychological states and processes. Biological aspects include electrophysiology and biochemical assessments during psychological experiments as well as biologically induced changes in psychological function. Psychological investigations based on biological theories are also of interest. All aspects of psychological functioning, including psychopathology, are germane. The Journal concentrates on work with human subjects, but may consider work with animal subjects if conceptually related to issues in human biological psychology.