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首页> 外文期刊>Journal of neurology >Susceptibility to pattern glare following stroke
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Susceptibility to pattern glare following stroke

机译：中风后容易产生眩光

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摘要

The aim of this work was to measure susceptibility to pattern glare within a stroke group, employing a direct methocNrf assessment. Twenty stroke subjects, aged 38-85 years, were recruited, along with an age-matched control group (n - 20). Assessment of pattern glare susceptibility was undertaken using the pattern glare test. An abnormal degree of pattern glare is present when individuals score >1 on the mid-high spatial frequency difference variable, a relative score that allows for normalization of the subject, or >3 when viewing the mid spatial frequency grating. Stroke subjects demonstrate elevated levels of pattern glare compared to normative data values and a control population, as determined using the pattern glare test. This was most notable when considering the output measure for the mid-high difference variable. The mean score for the mid-high difference variable was 2.15 SD 1.27 for the stroke subjects versus 0.10 SD 1.12 for the control subjects. When considering the mid-high difference variable, 75% of the stroke group recorded an abnormal level of pattern glare compared to 5% in the control group. This study demonstrates an association between stroke subjects and elevated levels of pattern glare. Cortical hyperexcitability has been shown to present following stroke, and this has been proposed as a plausible explanation for the perceptual distortions experienced by individuals susceptible to pattern glare. Further work to assess thebenefits of spectral filters in reducing perceptual distortions in stroke patients is currently underway.
机译：这项工作的目的是通过直接methocNrf评估来测量卒中组对图案眩光的敏感性。招募了20名年龄在38-85岁的中风受试者，以及一个年龄匹配的对照组（n-20）。使用图案眩光测试评估图案眩光敏感性。当个人在中高空间频率差变量上得分> 1（允许对对象进行归一化的相对得分）或在查看中空间频率光栅时> 3时，会出现异常的图案眩光。与正常数据值和对照组相比，卒中受试者表现出较高的模式眩光水平，这是使用模式眩光测试确定的。在考虑中高差异变量的输出度量时，这一点最为明显。中高差异变量的平均得分为中风受试者为2.15 SD 1.27，而对照受试者为0.10 SD 1.12。当考虑中高差异变量时，中风组中有75％的人记录了模式眩光，而对照组中只有5％。这项研究表明中风受试者与模式眩光水平升高之间的关联。大脑皮层过度兴奋已显示出中风后的症状，并已被提议作为对易受图案眩光影响的个体所经历的知觉失真的合理解释。目前正在开展进一步的工作，以评估频谱过滤器在减少中风患者的感知失真方面的优势。

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