KITE Research Institute, Toronto Rehab-University Health Network, Toronto, Canada; Department of Psychology, Toronto Metropolitan University, Toronto, Canada.
KITE Research Institute, Toronto Rehab-University Health Network, Toronto, Canada; Baycrest Health Sciences, Toronto, Canada.
Neurosci Lett. 2024 May 1;830:137767. doi: 10.1016/j.neulet.2024.137767. Epub 2024 Apr 8.
Concussion can lead to various symptoms such as balance problems, memory impairments, dizziness, and/or headaches. It has been previously suggested that during self-motion relevant tasks, individuals with concussion may rely heavily on visual information to compensate for potentially less reliable vestibular inputs and/or problems with multisensory integration. As such, concussed individuals may also be more sensitive to other visually-driven sensations such as visually induced motion sickness (VIMS). To investigate whether concussed individuals are at elevated risk of experiencing VIMS, we exposed participants with concussion (n = 16) and healthy controls (n = 15) to a virtual scene depicting visual self-motion down a grocery store aisle at different speeds. Participants with concussion were further separated into symptomatic and asymptomatic groups. VIMS was measured with the SSQ before and after stimulus exposure, and visual dependence, self-reported dizziness, and somatization were recorded at baseline. Results showed that concussed participants who were symptomatic demonstrated significantly higher SSQ scores after stimulus presentation compared to healthy controls and those who were asymptomatic. Visual dependence was positively correlated with the level of VIMS in healthy controls and participants with concussion. Our results suggest that the presence of concussion symptoms at time of testing significantly increased the risk and severity of VIMS. This finding is of relevance with regards to the use of visual display devices such as Virtual Reality applications in the assessment and rehabilitation of individuals with concussion.
脑震荡可能导致各种症状，如平衡问题、记忆障碍、头晕和/或头痛。此前有人提出，在与自身运动相关的任务中，脑震荡患者可能会严重依赖视觉信息来弥补潜在的不可靠的前庭输入和/或多感觉整合问题。因此，脑震荡患者可能对其他视觉驱动的感觉（如视觉诱发的运动病，VIMS）更敏感。为了研究脑震荡患者是否有更高的风险经历 VIMS，我们让脑震荡患者（n=16）和健康对照者（n=15）暴露在一个虚拟场景中，该场景描绘了在不同速度下沿着杂货店过道的视觉自身运动。脑震荡患者进一步分为有症状和无症状组。在刺激暴露前后使用 SSQ 测量 VIMS，在基线时记录视觉依赖性、自我报告的头晕和躯体化。结果表明，与健康对照组和无症状组相比，在刺激呈现后，有症状的脑震荡患者的 SSQ 评分明显更高。在健康对照组和脑震荡患者中，视觉依赖性与 VIMS 的严重程度呈正相关。我们的结果表明，在测试时存在脑震荡症状显著增加了 VIMS 的风险和严重程度。这一发现与在脑震荡患者的评估和康复中使用视觉显示设备（如虚拟现实应用）有关。
