Characteristics of Lower Limb Position Perception in Response to Environmental Information in Individuals with Low Vision
Characteristics of Lower Limb Position Perception in Response to Environmental Information in Individuals with Low Vision
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DOI：
10.1007/978-3-030-68017-6_87
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发表时间：
2021
期刊：
影响因子：
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通讯作者：
T. Uno
中科院分区：
文献类型：
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作者：
T. Uno
本研究旨在了解不同信息获取策略对色素性视网膜变性患者足部本体知觉和避障模式的影响。成年男性视网膜色素变性患者10例，年龄(39.2±7.9)岁。受试者使用四种信息获取策略获得障碍信息(障碍高度：4厘米、12厘米、20厘米)，分别是：视觉：直视积木(条件A)，口头：关于积木高度的信息(条件B)，触觉：没有时间限制的手识别积木(条件C)，以及言语和触觉刺激相结合(条件D)。他们还接受了以下任务的评估：任务1，参与者在识别障碍物的高度后，通过静态站立姿势抬起脚来再现障碍物的高度；任务2，参与者在获得条件A至D中的障碍物信息后，从一个可以一步完成任务的自由位置进行障碍跨越。在任务1中，在条件A和条件B下，与条件C和D相比，他们表现出更高的脚趾抬高和脚趾抬高的变异系数。在任务2中，在条件A中，前脚和后脚在跨过障碍物时的最高点显著升高。结果表明，触觉方法有助于提高受试者对障碍缺乏视觉信息的知觉。
This study aimed to understand the influence of various information acquisition strategies on foot proprioceptive and obstacle avoidance patterns among individuals with pigmentary retinal degeneration. Ten adult males (age: 39.2 ± 7.9 years) with pigmentary retinal degeneration were recruited. Participants obtained obstacle information (height of obstacle: 4 cm, 12 cm, 20 cm) using four information acquisition strategies, namely: visual: straight view in front of the block (condition A), verbal: information about the height of the block (condition B), tactile: identifying the block by hand with no time limit (condition C), and a combination of verbal and tactile stimuli (condition D). They were further evaluated by the following tasks: task 1, participants reproduced the height of the obstacles by lifting their foot in a static standing posture after they recognized the height of the obstacles; task 2, After the participants acquired obstacle information in conditions A to D, they performed an obstacle step-over from a free position from where it was possible to finish the task with one step. In task 1, under conditions A and B, they showed higher toe rise and higher coefficient of variance in toe rise compared to that under conditions C and D. For task 2, the highest points of the leading and trailing feet while stepping over the obstacle were significantly higher in condition A. Our results showed that the tactile method was useful to improve the perception of the participants caused by the lack of visual information about the obstacle.