前庭功能干扰对人体直立稳定性的影响
发布时间：2019-05-29 09:31
【摘要】：研究目的:通过计算分析人体足底压力中心(Centre Of Pressure,COP)数据的时域和频域指标,研究人体在前庭功能干扰下的直立稳定性。并通过频域指标定量分析不同前庭功能干扰方式(头部位置状态、坐位旋转)下的直立稳定性差异和在各方式下视觉、前庭觉、本体感觉之间的代偿机制,为前庭功能患者的康复和航天航空飞行员的选拔提供参考。研究方法:根据实验要求选取20名健康青年男性作为本次实验的受试者,受试者自愿参加本实验,但对实验目的并不知情。利用Kistler测力台采集受试者在头部前屈、头部后伸、头部左倾、头部右倾状态下和不同坐位旋转转速(每秒60、90、180度)后的COP数据,所有实验均在受试者闭眼状态下完成。采集的数据以ASCII格式、矩阵的形式输出到文本文档中,经编写的MATLAB运算程序计算后得到相关的生物力学指标,采用单因素方差分析对不同状态下的指标进行比较。研究结果:(1)头部不同位置状态下时域指标:(1)COP前后方向上的直立稳定性指标结果比较表明头部前屈状态下人体直立稳定性与头部竖直状态无显著性差异;而头部后伸状态下人体直立稳定性较头部竖直状态差,且有显著性差异;头部左倾和头部右倾状态下人体直立稳定性较头部竖直状态无显著性差异;(2)COP左右方向上的指标结果比较表明头部前屈和头部后伸状态下人体直立稳定性较头部竖直状态无显著性差异,而头部左倾和头部右倾状态下人体直立稳定性较较头部竖直状态差,且有显著性差异;(2)头部不同位置状态下与各感觉信息相关信号的频域指标:闭眼状态下视觉信息和小脑信息不受头部位置状态的影响,(1)与各感觉信息相关信号前后方向上的指标结果比较表明头部后伸会导致前庭觉信号较本体感觉信号有相反的指标特性;(2)与各感觉信息相关信号左右方向上的指标结果比较表明头部左倾和头部右倾都会导致前庭觉信号较本体感觉信号有相反的指标特性;(3)不同坐位旋转转速下时域指标:COP各方向上的指标结果比较表明随着转速的增加人体直立稳定性下降,且有显著性差异,但每秒60度转速下人体直立稳定性较无旋转无显著性差异;(4)不同坐位旋转转速下与各感觉信息相关信号的频域指标:闭眼状态下视觉信息不受坐位旋转的影响,而小脑信息会受坐位旋转的影响,(1)与各感觉信息相关信号前后方向上的指标结果反映出仅有在每秒180度转速下前庭觉信号较本体感觉信号有相同的指标特性;(2)与各感觉信息相关信号左右方向上的指标结果比较得出各转速下前庭觉信号较本体感觉信号有相同的指标特性。研究结论:(1)头部前屈不会导致青年健康人群直立稳定性下降;头部在矢状面内的位置状态改变只会使人体在矢状轴上的直立稳定性降低,而头部在额状面内的位置状态改变只会使人体在额状轴上的直立稳定性下降;(2)人体额状轴上的直立稳定性较矢状轴更易受半规管壶腹嵴前庭觉干预方式的影响而降低,每秒60度坐位旋转20s不足以导致青年健康人群直立稳定性下降。(3)半规管壶腹嵴前庭觉干预方式对前庭觉信息的干扰比囊斑前庭觉干预方式大。在人体前庭功能受干扰的状态下本体感觉信息会代偿前庭觉信息的馈乏。
[Abstract]:Objective: To study the vertical stability of human body under the disturbance of vestibular function by calculating the time domain and frequency domain index of the data of the center of foot pressure (COP) of human body. and the difference of the vertical stability under different vestibular function interference modes (the head position state and the sitting rotation) and the compensation mechanism between the vision, the vestibular sensation and the proprioception in each mode are quantitatively analyzed through the frequency domain index, And provides a reference for the rehabilitation of the vestibular function patients and the selection of the space aviation pilots. Study method:20 healthy young men were selected as subjects in this experiment according to the requirements of the experiment, and the subject voluntarily participated in the experiment, but did not know the purpose of the experiment. The COP data of the subject at the head, the head, the left, the head right, and the different sitting rotational speeds (60,90,180 degrees per second) were collected using the Kistler force cell, all of which were completed in the subject's closed-eye condition. The acquired data is output to a text document in the form of an ASCII format and a matrix, and the relevant biomechanical indexes are obtained after being calculated by the written MATLAB calculation program, and the indexes of different states are compared by a single-factor analysis of variance. Results: (1) The time domain index in different position of the head: (1) The results of the vertical stability index in the front and back direction of the head show no significant difference between the standing stability of the human body and the vertical state of the head in the pre-bending state of the head; and the vertical stability of the human body under the condition of the head left and the right inclination of the head has no significant difference between the vertical state of the head and the vertical state of the head; (2) The results of the index in the left and right direction of COP showed no significant difference between the vertical stability of the head and the vertical state of the head under the condition of the head and the head, while the vertical stability of the head in the left and the right of the head was lower than that of the head, and there was a significant difference. (2) the frequency-domain index of the signal related to the sensory information in different position states of the head: the visual information and the cerebellar information in the closed-eye state are not affected by the state of the head position, (1) The comparison of the index results in the fore-and-aft direction of the signal related to the sensory information indicates that the extension of the head can cause the vestibular sensory signal to have the opposite index characteristic with respect to the proprioceptive signal of the body; and (2) comparing the index results in the left and right directions of the signals related to the sensory information, indicating that the head left tilt and the head right tilt can cause the vestibular sensory signal to have the opposite index characteristic compared with the body sense signal; and (3) the time domain index at the rotating speed of the different sitting positions: The results of the indices in the direction of COP showed that the vertical stability of the human body decreased with the increase of the rotation speed, and there was a significant difference, but there was no significant difference in the upright stability of the human body at 60 degrees per second. (4) the frequency-domain index of the signal related to the sensory information at different sitting rotating speed: the visual information in the closed-eye state is not affected by the rotation of the sitting position, and the cerebellar information can be influenced by the sitting rotation, (1) The index results in the fore-and-aft direction of the signal related to each sensory information reflect that only the vestibular sensory signal has the same index characteristic at the rotation speed of 180 degrees per second; And (2) comparing the index results in the left and right directions of the signals related to the sensory information to obtain the same index characteristic of the sensory signals of the vestibular sensory signals at each rotating speed. The results of the study: (1) The prebending of the head does not lead to a decrease in the erect stability of the healthy population of the young; the change of the position of the head in the sagittal plane only reduces the vertical stability of the human body on the sagittal axis, while the change of the position state of the head in the frontal plane only reduces the vertical stability of the human body on the frontal axis, and (2) the vertical stability of the frontal axis of the human body is easier to be reduced by the effect of the half-regulation of the vestibular sensory intervention of the ampulla of the ampulla, A 60-degree seat rotation of 20 seconds per second is not sufficient to lead to a decrease in the standing stability of the young healthy population. (3) The disturbance of the vestibular sensory information on the vestibular sensory information of the semi-regulated ampulla of the ampulla is greater than that of the vestibular sensory intervention. In the condition that the vestibular function of the human body is disturbed, the sensory information of the body can compensate for the feeding of the vestibular sensory information.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：G804.6
[Abstract]:Objective: To study the vertical stability of human body under the disturbance of vestibular function by calculating the time domain and frequency domain index of the data of the center of foot pressure (COP) of human body. and the difference of the vertical stability under different vestibular function interference modes (the head position state and the sitting rotation) and the compensation mechanism between the vision, the vestibular sensation and the proprioception in each mode are quantitatively analyzed through the frequency domain index, And provides a reference for the rehabilitation of the vestibular function patients and the selection of the space aviation pilots. Study method:20 healthy young men were selected as subjects in this experiment according to the requirements of the experiment, and the subject voluntarily participated in the experiment, but did not know the purpose of the experiment. The COP data of the subject at the head, the head, the left, the head right, and the different sitting rotational speeds (60,90,180 degrees per second) were collected using the Kistler force cell, all of which were completed in the subject's closed-eye condition. The acquired data is output to a text document in the form of an ASCII format and a matrix, and the relevant biomechanical indexes are obtained after being calculated by the written MATLAB calculation program, and the indexes of different states are compared by a single-factor analysis of variance. Results: (1) The time domain index in different position of the head: (1) The results of the vertical stability index in the front and back direction of the head show no significant difference between the standing stability of the human body and the vertical state of the head in the pre-bending state of the head; and the vertical stability of the human body under the condition of the head left and the right inclination of the head has no significant difference between the vertical state of the head and the vertical state of the head; (2) The results of the index in the left and right direction of COP showed no significant difference between the vertical stability of the head and the vertical state of the head under the condition of the head and the head, while the vertical stability of the head in the left and the right of the head was lower than that of the head, and there was a significant difference. (2) the frequency-domain index of the signal related to the sensory information in different position states of the head: the visual information and the cerebellar information in the closed-eye state are not affected by the state of the head position, (1) The comparison of the index results in the fore-and-aft direction of the signal related to the sensory information indicates that the extension of the head can cause the vestibular sensory signal to have the opposite index characteristic with respect to the proprioceptive signal of the body; and (2) comparing the index results in the left and right directions of the signals related to the sensory information, indicating that the head left tilt and the head right tilt can cause the vestibular sensory signal to have the opposite index characteristic compared with the body sense signal; and (3) the time domain index at the rotating speed of the different sitting positions: The results of the indices in the direction of COP showed that the vertical stability of the human body decreased with the increase of the rotation speed, and there was a significant difference, but there was no significant difference in the upright stability of the human body at 60 degrees per second. (4) the frequency-domain index of the signal related to the sensory information at different sitting rotating speed: the visual information in the closed-eye state is not affected by the rotation of the sitting position, and the cerebellar information can be influenced by the sitting rotation, (1) The index results in the fore-and-aft direction of the signal related to each sensory information reflect that only the vestibular sensory signal has the same index characteristic at the rotation speed of 180 degrees per second; And (2) comparing the index results in the left and right directions of the signals related to the sensory information to obtain the same index characteristic of the sensory signals of the vestibular sensory signals at each rotating speed. The results of the study: (1) The prebending of the head does not lead to a decrease in the erect stability of the healthy population of the young; the change of the position of the head in the sagittal plane only reduces the vertical stability of the human body on the sagittal axis, while the change of the position state of the head in the frontal plane only reduces the vertical stability of the human body on the frontal axis, and (2) the vertical stability of the frontal axis of the human body is easier to be reduced by the effect of the half-regulation of the vestibular sensory intervention of the ampulla of the ampulla, A 60-degree seat rotation of 20 seconds per second is not sufficient to lead to a decrease in the standing stability of the young healthy population. (3) The disturbance of the vestibular sensory information on the vestibular sensory information of the semi-regulated ampulla of the ampulla is greater than that of the vestibular sensory intervention. In the condition that the vestibular function of the human body is disturbed, the sensory information of the body can compensate for the feeding of the vestibular sensory information.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：G804.6
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