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在延迟折扣期间减少对决策冲突的上下文影响在神经性厌食症的体重恢复后仍然存在
Fabio Bernardoni1, Joseph A King1, Martin Schoemann2
1Translational Developmental Neuroscience Section, Division of Psychological and Social Medicine and Developmental Neurosciences, Faculty of Medicine, TU Dresden, Dresden, Germany.
Appetite
|February 28, 2025
概括
从精神性厌食症 (AN) 恢复体重的个体表现出稳定的决策冲突,这表明潜在的认知特征有助于追求长期目标,如体重.
科学领域:
- 认知神经科学 认知神经科学
- 临床心理学 临床心理学
- 饮食障碍 研究 研究 研究
背景情况:
- 精神性厌食症 (AN) 患者可能会表现出延迟满足,但先前关于延迟扣除任务中的决策冲突的研究 yielded mixed results.
- 之前的研究表明,体重不足的AN患者表现出类似的选择,但与健康对照 (HC) 相比,决策冲突更稳定.
- 在AN重量恢复后,这些认知模式的持续性需要进一步调查.
研究的目的:
- 为了确定认知变化,特别是决策冲突,在从AN恢复体重后,在个体中持续存在.
- 在延迟折扣任务中检查鼠标标标的运动轨迹,以测量决策冲突的强度.
- 探索选择困难对重量恢复的AN (wrAN) 和HC组决策冲突的缓解影响.
主要方法:
- 招募了45名女性青少年和有AN病史的年轻女性,这些女性重量恢复 (wrAN) 和90名健康对照 (HC).
- 在延迟折扣任务中利用鼠标标光标轨迹分析来评估决策冲突.
- 分析了从直接选择路径的偏差作为冲突强度的衡量标准,并通过像选择难度这样的预测因素检查了适度.
主要成果:
- 在wrAN和HC组之间,在延迟折扣参数或鼠标标标轨迹测量方面没有发现显著的群体差异.
- 预测因素,如选择困难,对决策冲突偏差的影响在wrAN组相比HC组减少.
- 在wrAN组中观察到,决策冲突强度在任务之间变化较小.
结论:
- 持续减少决策冲突的可变性可能代表具有AN史的个体的认知行为特征标志物.
- 这种认知模式可以促进长期目标的追求,例如体重管理,通过潜在地减少对立选择的主观体验.
- 研究结果表明,与AN相关的某些认知特征甚至在成功恢复体重后也可能持续存在.
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