Van Den Houte Maaike, Vlemincx Elke, Franssen Mathijs, Van Diest Ilse, Van Oudenhove Lukas, Luminet Olivier
Research group on Health, Emotion, Cognition, and Memory, Research Institute for Psychological Sciences, UCLouvain, Louvain-La-Neuve, Belgium.
Laboratory for Brain-Gut Axis Studies (LaBGAS), KU Leuven, Leuven, Belgium.
Psychophysiology. 2021 Apr;58(4):e13760. doi: 10.1111/psyp.13760. Epub 2021 Jan 12.
Interoception, or the sense of the internal state of the body, is hypothesized to be essential for a wide range of psychobiological processes and the development and perpetuation of several (mental) health problems. However, the study of interoceptive accuracy, the objectively measured capacity to detect or discriminate conscious bodily signals, has been hampered by the use of tasks with questionable construct validity and is often limited to studying interoception solely in the cardiac domain. We developed a novel task to measure interoceptive accuracy in the respiratory domain, the respiratory occlusion discrimination (ROD) task. In this task, interoceptive accuracy is defined as an individual's ability to detect small differences in lengths of short respiratory occlusions, assessed by means of an adaptive staircase procedure. This article describes a validation study (N = 97) aimed at investigating the internal consistency, test-retest reliability, and discriminant validity of the ROD task. The average just noticeable difference of lengths of respiratory occlusion was 74.22 ms, with large inter-individual variability (SD = 37.1 ms). The results of the validation study indicate acceptable internal consistency (Cronbach's alpha = 0.70), 1-week test-retest reliability (r = 0.53), and discriminant validity, as indicated by a lack of correlation between the ROD task and an auditory discrimination task with identical design (r = 0.18), and a weak correlation with breathing behavior (r = -0.27). The ROD task is a promising novel paradigm to study interoceptive accuracy and its role in various psychobiological processes and disorders.
内感受，即对身体内部状态的感知，被认为对广泛的心理生物学过程以及多种（精神）健康问题的发展和持续存在至关重要。然而，内感受准确性的研究，即客观测量检测或区分有意识身体信号的能力，一直受到使用结构效度存疑的任务的阻碍，并且通常仅限于仅在心脏领域研究内感受。我们开发了一种新颖的任务来测量呼吸领域的内感受准确性，即呼吸阻塞辨别（ROD）任务。在这个任务中，内感受准确性被定义为个体检测短呼吸阻塞长度微小差异的能力，通过自适应阶梯程序进行评估。本文描述了一项验证研究（N = 97），旨在调查ROD任务的内部一致性、重测信度和区分效度。呼吸阻塞长度的平均刚可察觉差异为74.22毫秒，个体间差异较大（标准差 = 37.1毫秒）。验证研究结果表明内部一致性可接受（克朗巴哈系数 = 0.70），1周重测信度（r = 0.53），以及区分效度，如ROD任务与设计相同的听觉辨别任务之间缺乏相关性（r = 0.18）以及与呼吸行为的弱相关性（r = -0.27）所示。ROD任务是一种有前景的新颖范式，可用于研究内感受准确性及其在各种心理生物学过程和障碍中的作用。
