在一般人口样本中,有证据表明,在易于幻觉的个体中,感官精度降低,对先验的依赖增加
David Benrimoh1, Victoria L Fisher2, Rashina Seabury2
1Department of Psychiatry, McGill University School of Medicine, Montreal, Canada.
Schizophrenia bulletin
|October 13, 2023
概括
经历幻觉的个体可能会过重先前的信念,特别是复杂的听觉信息. 这项研究发现,感官精度降低在幻觉易发性和严重性中起作用.
科学领域:
- 认知神经科学 认知神经科学
- 精神病学是一个精神病学.
- 计算精神病学是一种计算精神病学.
背景情况:
- 幻觉与重视先前的信念超过感官证据有关.
- 之前的研究使用了简单的刺激;精神病中的听觉幻觉通常是语言的.
- 在幻觉中,语言信息和感官感知之间的相互作用还未得到充分研究.
研究的目的:
- 用语言刺激来研究听觉幻觉中的感知推断.
- 检查幻觉倾向,先前权重和感官精度之间的关系.
- 调整条件幻觉 (CH) 任务以适应语言刺激.
主要方法:
- 对88名普通人群参与者进行了语言条件幻觉 (CH) 任务.
- 收集了关于幻觉倾向,严重程度,刺激值和检测率的数据.
- 应用了层次高斯波器 (HGF) 模型来分析感知推理.
主要成果:
- 较高的CH率与最近的幻觉和幻觉倾向相关.
- 增加先前的权重与更高的CH率和幻觉严重程度有关.
- 易发生幻觉的参与者表现出降低的感官精度 (更高的值,更低的敏感性,更低的信心).
结论:
- 使用语言刺激复制了以前的超重发现.
- 结果表明,减少感官精度是先前权重和幻觉易感之间的关键关系.
- 语言听觉信息处理与理解精神病中的幻觉有关.
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