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Perception of gait motion during multiple lower-limb vibrations in young healthy individuals: a pilot study
Experimental Brain Research ( IF 2 ) Pub Date : 2021-08-31 , DOI: 10.1007/s00221-021-06199-1
Alexandre Tapin 1 , Noémie C Duclos 2, 3 , Karim Jamal 1 , Cyril Duclos 1
Affiliation  

In virtual reality (VR), immersion can be created through synchronous visuomotor stimulations and enhanced by adding auditory or kinesthetic stimulations. Multiple patterned vibrations applied at the lower limbs might be a way to induce kinesthetic perception of gait motion that could be combined with VR stimulations to add the perception of self-motion. However, gait motion perception using multiple vibrations has not yet been evaluated. The objective of the study was to quantify the perception of gait motion while applying multiple, patterned vibrations to the lower limbs in healthy individuals. Twenty young healthy participants (25.1 ± 4.4 years) experienced multiple vibrations in 1-min trials. Stimulation consisted of a vibration pattern based on the sequence of muscle lengthening during a 2-s gait cycle. Stimulation was applied on participants in a standing position, under 11 experimental conditions controlling visual information (eyes open/closed), vibration frequency (40–80 Hz), and number and location of the joints stimulated (hips, knees, ankles isolated or combined two by two). Perception of gait motion was quantified for each condition using a 10-point visual analog scale (VAS, 0: "no perception", 10: "Perception of gait movements"). All participants except one achieved a score higher than 5/10 in at least one condition. Great variability was found for perception of gait motion within participants and conditions (VAS ranging from 0 to 9.6/10). Differences were found between conditions (p < 0.01), with higher mean and median scores in conditions that included knee vibration. Inducing gait motion perception is possible using multiple vibrations in healthy individuals. Stimulation of the knees seems to positively influence perception of gait motion.



中文翻译:

年轻健康个体在多次下肢振动期间对步态运动的感知:一项初步研究

在虚拟现实 (VR) 中,可以通过同步视觉运动刺激创造沉浸感,并通过添加听觉或动觉刺激来增强沉浸感。应用于下肢的多种模式振动可能是诱导步态运动的动觉感知的一种方式,可以与 VR 刺激相结合以增加自我运动的感知。然而,尚未评估使用多重振动的步态运动感知。该研究的目的是量化步态运动的感知,同时对健康个体的下肢应用多个模式化振动。20 名健康的年轻参与者(25.1 ± 4.4 岁)在 1 分钟的试验中经历了多次振动。刺激由基于 2 秒步态周期期间肌肉拉长序列的振动模式组成。在 11 种控制视觉信息(睁眼/闭眼)、振动频率(40-80 Hz)以及受刺激关节的数量和位置(髋关节、膝关节、踝关节分离或组合)的实验条件下,对站立姿势的参与者施加刺激两两)。使用 10 点视觉模拟量表(VAS,0:“无知觉”,10:“步态运动的知觉”)量化每种条件下步态运动的感知。除一名参与者外,所有参与者在至少一项条件下的得分均高于 5/10。发现参与者和条件(VAS 范围从 0 到 9.6/10)内的步态运动感知存在很大差异。发现条件之间存在差异 ( 振动频率(40–80 Hz),以及受刺激关节的数量和位置(臀部、膝盖、脚踝分开或两两结合)。使用 10 点视觉模拟量表(VAS,0:“无知觉”,10:“步态运动的知觉”)量化每种条件下步态运动的感知。除一名参与者外,所有参与者在至少一项条件下的得分均高于 5/10。发现参与者和条件(VAS 范围从 0 到 9.6/10)内的步态运动感知存在很大差异。发现条件之间存在差异 ( 振动频率(40–80 Hz),以及受刺激关节的数量和位置(臀部、膝盖、脚踝分开或两两结合)。使用 10 点视觉模拟量表(VAS,0:“无知觉”,10:“步态运动的知觉”)量化每种条件下步态运动的感知。除一名参与者外,所有参与者在至少一项条件下的得分均高于 5/10。发现参与者和条件(VAS 范围从 0 到 9.6/10)内的步态运动感知存在很大差异。发现条件之间存在差异 ( 除一名参与者外,所有参与者在至少一项条件下的得分均高于 5/10。发现参与者和条件(VAS 范围从 0 到 9.6/10)内的步态运动感知存在很大差异。发现条件之间存在差异 ( 除一名参与者外,所有参与者在至少一项条件下的得分均高于 5/10。发现参与者和条件(VAS 范围从 0 到 9.6/10)内的步态运动感知存在很大差异。发现条件之间存在差异 (p  < 0.01),在包括膝盖振动的条件下具有更高的平均分数和中位数分数。在健康个体中使用多种振动可以诱导步态运动感知。膝盖的刺激似乎对步态运动的感知有积极影响。

更新日期:2021-09-01
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