健康受试者在冷热试验期间的主观视觉垂直：对研究和神经康复的启示
Subjective Visual Vertical during Caloric Stimulation in Healthy Subjects: Implications to Research and Neurorehabilitation.
作者信息
Funabashi Martha, Flores Aline I, Vicentino Amanda, Barros Camila G C, Pontes-Neto Octavio M, Leite João P, Santos-Pontelli Taiza E G
机构信息
Department of Rehabilitation Sciences, Faculty of Rehabilitation Medicine, University of Alberta, 3-48 Corbett Hall, Edmonton, AB, Canada T6G 2G4.
Department of Neuroscience and Behavior, School of Medicine at Ribeirão Preto, University of São Paulo, Avenida Dos Bandeirantes 3900, 14049-900 Ribeirão Preto, SP, Brazil.
出版信息
Rehabil Res Pract. 2015;2015:367695. doi: 10.1155/2015/367695. Epub 2015 May 26.
Background. The subjective visual vertical (SVV) is a perception often impaired in patients with neurologic disorders and is considered a sensitive tool to detect otolithic dysfunctions. However, it remains unclear whether the semicircular canals (SCCs) are also involved in the visual vertical perception. Objective. The aim of this study was to analyze the influence of horizontal SCCs on SVV by caloric stimulation in healthy subjects. Methods. SVV was performed before and during the ice-cold caloric stimulation (4°C, right ear) in 30 healthy subjects. Results. The mean SVV tilts before and during the caloric stimulation were 0.31° ± 0.39 and -0.28° ± 0.40, respectively. There was no significant difference between the mean SVV tilts before and during stimulation (p = 0.113). Conclusion. These results suggest that horizontal SCCs do not influence SVV. Therefore, investigations and rehabilitation approaches for SVV misperceptions should be focused on otolithic and cognitive strategies.
背景。主观视觉垂直（SVV）是一种在神经系统疾病患者中常受损的感知，被认为是检测耳石功能障碍的敏感工具。然而，尚不清楚半规管（SCCs）是否也参与视觉垂直感知。目的。本研究的目的是通过对健康受试者进行冷热刺激来分析水平半规管对SVV的影响。方法。对30名健康受试者在冷热量刺激（4°C，右耳）之前和期间进行SVV检测。结果。热量刺激之前和期间的平均SVV倾斜度分别为0.31°±0.39和-0.28°±0.40。刺激之前和期间的平均SVV倾斜度之间无显著差异（p = 0.113）。结论。这些结果表明水平半规管不影响SVV。因此，对于SVV错误感知的研究和康复方法应集中于耳石和认知策略。
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