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首页> 美国卫生研究院文献>Journal of Clinical Medicine >UnReal? Investigating the Sense of Reality and Psychotic Symptoms with Virtual Reality
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UnReal? Investigating the Sense of Reality and Psychotic Symptoms with Virtual Reality

机译：虚幻？用虚拟现实调查现实感和精神病症状

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Distortions of reality, such as hallucinations, are common symptoms of many psychiatric conditions. Accordingly, sense of reality (SoR), the ability to discriminate between true and false perceptions, is a central criterion in the assessment of neurological and psychiatric health. Despite the critical role of the SoR in daily life, little is known about how this is formed in the mind. Here, we propose a novel theoretical and methodological framework to study the SoR and its relation to psychotic symptoms. In two experiments, we employed a specialized immersive virtual reality (VR) environment allowing for well-controlled manipulations of visual reality. We first tested the impact of manipulating visual reality on objective perceptual thresholds (just noticeable differences). In a second experiment, we tested how these manipulations affected subjective judgments of reality. The results revealed that the objective perceptual thresholds were robust and replicable, demonstrating that SoR is a stable psychometric property that can be measured experimentally. Furthermore, reality alterations reduced subjective reality judgments across all manipulated visual aspects. Finally, reduced sensitivity to changes in visual reality was related to self-reported prodromal psychotic symptoms. These results provide evidence for the relevance of SoR in the assessment of psychosis and other mental disorders in which reality is distorted.
机译：诸如幻觉之类的现实失真是许多精神疾病的常见症状。因此，真实感（SoR）是区分真假认识的能力，是评估神经和精神病健康状况的主要标准。尽管SoR在日常生活中起着至关重要的作用，但人们对它在大脑中的形成方式知之甚少。在这里，我们提出了一个新颖的理论和方法框架来研究SoR及其与精神病症状的关系。在两个实验中，我们采用了专门的沉浸式虚拟现实（VR）环境，可以对视觉现实进行良好控制的操纵。我们首先测试了操纵视觉现实对客观感知阈值（只是明显的差异）的影响。在第二个实验中，我们测试了这些操纵如何影响现实的主观判断。结果表明，客观的感知阈值是可靠且可复制的，表明SoR是可以通过实验测量的稳定的心理测量属性。此外，现实改变减少了所有操纵视觉方面的主观现实判断。最后，对视觉现实变化的敏感性降低与自我报告的前驱性精神病症状有关。这些结果提供了证据，表明SoR在评估现实被扭曲的精神病和其他精神障碍中的相关性。

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