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首页> 外文期刊>The Canadian Journal of Neurological Sciences: le Journal Canadien des Sciences Neurologiques >The Weighting of Cues to Upright Following Stroke With and Without a History of Pushing
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The Weighting of Cues to Upright Following Stroke With and Without a History of Pushing

机译：提示的加权与行程紧张，没有推动历史

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摘要

Objective: Perceived upright depends on three main factors: vision, graviception, and the internal representation of the long axis of the body. We assessed the relative contributions of these factors in individuals with sub-acute and chronic stroke and controls using a novel tool; the Oriented Character Recognition Test (OCHART). We also considered whether individuals who displayed active pushing or had a history of pushing behaviours had different weightings than those with no signs of pushing. Method: Three participants experienced a stroke 6 months prior: eight with a history of pushing. In total, 12 participants served as healthy aged-matched controls. Visual and graviceptive cues were dissociated by orienting the visual background left, right, or upright relative to the body, or by orienting the body left, right, or upright relative to gravity. A three-vector model was used to quantify the weightings of vision, graviception, and the body to the perceptual upright. Results: The control group showed weightings of 13% vision, 25% graviception, and 62% body. Some individuals with stroke showed a similar pattern; others, particularly those with recent stroke, showed different patterns, for example, being unaffected by one of the three factors. The participant with active pushing behaviour displayed an ipsilesional perceptual bias (>30°) and was not affected by visual cues to upright. Conclusion: The results of OCHART may be used to quantify the weightings of multisensory inputs in individuals post-stroke and may help characterize perceptual sources of pushing behaviours.
机译：目的：看得其直立取决于三个主要因素：视觉，重力，以及身体长轴的内部表示。我们评估了使用小型工具对亚急性和慢性卒中和控制的个体中这些因素的相对贡献;面向角色识别测试（Ochart）。我们还考虑了展示主动推动或推动行为历史的个人是否具有不同的重量，而不是没有推动迹象。方法：三位参与者经历了6个月的行程：八个历史推动。总共有12名参与者作为健康的老年人匹配的控制。通过将视觉背景，右侧或直立相对于主体定向，或者通过相对于重力定向左，右侧或直立，通过定向视觉背景，右侧或直立来解析视觉和重力线索。使用三种向量模型来量化视觉，重力，身体的重量，对感知直立。结果：对照组显示重量为13％的视觉，25％以62％的体。有些带有中风的人表现出类似的模式;其他，特别是近期中风的人，例如，不同的模式，例如，不受三种因素之一的影响。主动推动行为的参与者显示了一个IPsiles感知偏差（> 30°）并且不受视觉提示的影响。结论：Ochart的结果可用于量化中风后多师投入的重量，并有助于表征推动行为的感知来源。

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