KITE Research Institute, Toronto Rehabilitation Institute-University Health Network, 550 University Avenue, Toronto, ON, M5G 2A2, Canada.
Department of Psychology, Toronto Metropolitan University, Toronto, Canada.
Exp Brain Res. 2023 Oct;241(10):2463-2473. doi: 10.1007/s00221-023-06690-x. Epub 2023 Aug 31.
Visually induced motion sickness (VIMS) is a common phenomenon when using visual devices such as smartphones and virtual reality applications, with symptoms including nausea, fatigue, and headache. To date, the neuro-cognitive processes underlying VIMS are not fully understood. Previous studies using electroencephalography (EEG) delivered mixed findings, with some reporting an increase in delta and theta power, and others reporting increases in alpha and beta frequencies. The goal of the study was to gain further insight into EEG correlates for VIMS. Participants viewed a VIMS-inducing visual stimulus, composed of moving black-and-white vertical bars presented on an array of three adjacent monitors. The EEG was recorded during visual stimulation and VIMS ratings were recorded after each trial using the Fast Motion Sickness Scale. Time-frequency analyses were conducted comparing neural activity of participants reporting minimal VIMS (n = 21) and mild-moderate VIMS (n = 12). Results suggested a potential increase in delta power in the centro-parietal regions (CP2) and a decrease in alpha power in the central regions (Cz) for participants experiencing mild-moderate VIMS compared to those with minimal VIMS. Event-related spectral perturbations (ERSPs) suggested that group differences in EEG activity developed with increasing duration of a trial. These results support the hypothesis that the EEG might be sensitive to differences in information processing in VIMS and minimal VIMS contexts, and indicate that it may be possible to identify neurophysiological correlate of VIMS. Differences in EEG activity related to VIMS may reflect differential processing of conflicting visual and vestibular sensory information.
视觉诱导运动病（VIMS）是使用智能手机和虚拟现实应用等视觉设备时常见的现象，其症状包括恶心、疲劳和头痛。迄今为止，VIMS 背后的神经认知过程尚不完全清楚。先前使用脑电图（EEG）的研究得出的结果喜忧参半，一些研究报告说 delta 和 theta 功率增加，而另一些研究报告说 alpha 和 beta 频率增加。该研究的目的是进一步深入了解 VIMS 的 EEG 相关性。参与者观看了一个 VIMS 诱导的视觉刺激，该刺激由三个相邻监视器上呈现的移动黑白垂直条组成。在视觉刺激期间记录 EEG，并在每次试验后使用快速运动病量表记录 VIMS 评分。对报告最小 VIMS（n = 21）和轻度中度 VIMS（n = 12）的参与者的神经活动进行了时频分析。结果表明，与最小 VIMS 的参与者相比，经历轻度中度 VIMS 的参与者的中央顶区（CP2）的 delta 功率可能增加，而中央区（Cz）的 alpha 功率降低。事件相关频谱扰动（ERSP）表明，随着试验持续时间的增加，脑电图活动中的组差异发展。这些结果支持这样一种假设，即 EEG 可能对 VIMS 和最小 VIMS 环境中信息处理的差异敏感，并表明有可能确定 VIMS 的神经生理相关性。与 VIMS 相关的脑电图活动差异可能反映了视觉和前庭感觉信息处理的差异。
