Intra-individual consistency of vestibular perceptual thresholds

IF 1.7 4区 心理学 Q3 PSYCHOLOGY
Torin K. Clark, Raquel C. Galvan-Garza, Daniel M. Merfeld
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引用次数: 0

Abstract

Vestibular perceptual thresholds quantify sensory noise associated with reliable perception of small self-motions. Previous studies have identified substantial variation between even healthy individuals’ thresholds. However, it remains unclear if or how an individual’s vestibular threshold varies over repeated measures across various time scales (repeated measurements on the same day, across days, weeks, or months). Here, we assessed yaw rotation and roll tilt thresholds in four individuals and compared this intra-individual variability to inter-individual variability of thresholds measured across a large age-matched cohort each measured only once. For analysis, we performed simulations of threshold measurements where there was no underlying variability (or it was manipulated) to compare to that observed empirically. We found remarkable consistency in vestibular thresholds within individuals, for both yaw rotation and roll tilt; this contrasts with substantial inter-individual differences. Thus, we conclude that vestibular perceptual thresholds are an innate characteristic, which validates pooling measures across sessions and potentially serves as a stable clinical diagnostic and/or biomarker.

Abstract Image

Abstract Image

前庭知觉阈值的个体内一致性
前庭知觉阈值量化了与可靠感知微小自我运动相关的感觉噪声。以往的研究发现,即使是健康人的阈值之间也存在很大差异。然而,目前仍不清楚个体的前庭阈值在不同时间尺度(同一天、不同天、不同周或不同月)的重复测量中是否或如何变化。在这里,我们评估了四个人的偏航旋转和滚动倾斜阈值,并将这种个体内变异性与一个大的年龄匹配队列中每个人只测量一次的阈值的个体间变异性进行了比较。为了进行分析,我们对没有潜在变异性(或变异性被操纵)的阈值测量进行了模拟,以便与经验观察到的变异性进行比较。我们发现,无论是偏航旋转还是滚动倾斜,个体内部的前庭阈值都非常一致;这与个体间的巨大差异形成了鲜明对比。因此,我们得出结论,前庭知觉阈值是一种与生俱来的特征,它验证了跨疗程集合测量的有效性,并有可能成为一种稳定的临床诊断和/或生物标志物。
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来源期刊
CiteScore
3.60
自引率
17.60%
发文量
197
审稿时长
4-8 weeks
期刊介绍: The journal Attention, Perception, & Psychophysics is an official journal of the Psychonomic Society. It spans all areas of research in sensory processes, perception, attention, and psychophysics. Most articles published are reports of experimental work; the journal also presents theoretical, integrative, and evaluative reviews. Commentary on issues of importance to researchers appears in a special section of the journal. Founded in 1966 as Perception & Psychophysics, the journal assumed its present name in 2009.
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