Improving self-motion perception and balance through roll tilt perceptual training.
Improving self-motion perception and balance through roll tilt perceptual training.
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通过滚动倾斜知觉训练改善自我运动知觉和平衡。
DOI：
10.1152/jn.00092.2022
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发表时间：
2022
影响因子：
2.5
通讯作者：
Merfeld,DanielM
中科院分区：
文献类型：
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作者：
Wagner,AndrewR;Kobel,MeganJ;Tajino,Junichi;Merfeld,DanielM
本研究旨在确定前庭知觉学习干预是否可以改善翻滚倾斜、自我运动知觉和平衡能力。两个干预组(n=10)以0.5赫兹(S 2次/动作)或0.2赫兹(S 5次/动作)进行了1,300次滚动倾斜试验，每次试验结束后，每个干预组都会得到反馈(正确/不正确)。在研究的第1天和第6天，测量了使用0.2赫兹、0.5赫兹和1赫兹刺激测量的翻滚倾斜知觉阈值，以及安静站姿的姿势摆动。未进行知觉训练的对照组(n=10)表现出稳定的0.2赫兹(+1.48%，P&gT；0.99)、0.5赫兹(−4.0%，P&gT；0.99)和1赫兹(−17.48%，P=0.20)的滚动倾斜阈值。0.2赫兹训练组在0.2赫兹(−23.77%，P=0.003)和0.5赫兹(−22.2%，P=0.03)阈值均有显著改善。0.5赫兹训练组的0.2赫兹听阈有显著改善(−19.13%，P=0.029)，而0.5赫兹听阈无明显改善(−17.68%，P=0.052)。两个训练组在未训练的1-HZ频率下均无明显改善(P>；0.05)。除了知觉精确度的提高外，0.5赫兹训练组在“睁眼看泡沫”(DZ=0.57，P=0.032)和“闭眼看泡沫”(DZ=2.05P<；0.001)安静站姿平衡任务中测量的摇摆都有所减少。这些初步数据表明，在少于5小时的训练中，翻滚倾斜知觉可以得到改善，前庭知觉训练可能有助于减少亚临床姿势不稳定性。NEW和NOTEWORTHYRoll倾斜前庭感知阈值，一种前庭噪声的分析，最近被发现与姿势摆动有关。因此，我们假设，滚动倾斜知觉训练将在知觉精确度和平衡性方面产生改善。我们的数据显示，在不到5h的滚翻知觉训练后，滚翻知觉阈值和安静姿势摆动都能显著提高，支持前庭噪声导致姿势摆动增加的假说。
The present study aimed to determine if a vestibular perceptual learning intervention could improve roll tilt self-motion perception and balance performance. Two intervention groups (n= 10 each) performed 1,300 trials of roll tilt at either 0.5 Hz (2 s/motion) or 0.2 Hz (5 s/motion) distributed over 5 days; each intervention group was provided feedback (correct/incorrect) after each trial. Roll tilt perceptual thresholds, measured using 0.2-, 0.5-, and 1-Hz stimuli, as well as quiet stance postural sway, were measured onday 1andday 6of the study. The control group (n= 10) who performed no perceptual training, showed stable 0.2-Hz (+1.48%,P> 0.99), 0.5-Hz (−4.0%,P> 0.99), and 1-Hz (−17.48%,P= 0.20) roll tilt thresholds. The 0.2-Hz training group demonstrated significant improvements in both 0.2-Hz (−23.77%,P= 0.003) and 0.5-Hz (−22.2%,P= 0.03) thresholds. The 0.5-Hz training group showed a significant improvement in 0.2-Hz thresholds (−19.13%,P= 0.029), but not 0.5-Hz thresholds (−17.68%,P= 0.052). Neither training group improved significantly at the untrained 1-Hz frequency (P> 0.05). In addition to improvements in perceptual precision, the 0.5-Hz training group showed a decrease in sway when measured during “eyes open, on foam” (dz= 0.57,P= 0.032) and “eyes closed, on foam” (dz= 2.05,P< 0.001) quiet stance balance tasks. These initial data suggest that roll tilt perception can be improved with less than 5 h of training and that vestibular perceptual training may contribute to a reduction in subclinical postural instability.NEW & NOTEWORTHYRoll tilt vestibular perceptual thresholds, an assay of vestibular noise, were recently found to correlate with postural sway. We therefore hypothesized that roll tilt perceptual training would yield improvements in both perceptual precision and balance. Our data show that roll tilt perceptual thresholds and quiet stance postural sway can be significantly improved after less than 5 h of roll tilt perceptual training, supporting the hypothesis that vestibular noise contributes to increased postural sway.