Changes in control of eye movement and upper limb movement with automatization of postural control during floor vibration

地板振动期间姿势控制的自动化改变了眼球运动和上肢运动的控制

• 批准号: 12680020
• 负责人: TOYAMA Hiroshi
• 金额: $ 1.73万
• 依托单位: Kanazawa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-12680020/
• 关键词: postural control; eye movement; upper limb movement; automatization; interference

We investigated changes in control of the eye movement and upper limb movement with automatization of postural control during floor vibration. The subjects were healthy university students, all of them had no experience of floor vibration. The saccadic eye movement (S-group, n=9) and smooth pursuit eye movement (P-group, n=10) were adopted as the eye movement. The reaction movement (R-group, n=10) and tracking movement (T-group, n=10) were adopted as the upper limb movement. A vibration table mounted with a force platform was vibrated sinusoidaly in anteroposterior direction under the condition of 2.5 cm amplitude and 0.5 Hz frequency. A visual target was presented on a face mounting display. The movement of the eye and upper limb were picked up using the electro-oculogram technique and electric signal of a potentiometer that was controlled by the upper limb, respectively. For T-group, a spot for following the visual target, which was controlled by the electric signal of potentiometer, … More was presented on the face mounting display. The visual target was alternately moved toward left and right for random durations of 2-4 s for S- and R-groups, and was moved sinusoidaly in horizontal level under the condition of 0.3 Hz for P- and T-groups. A visual angle was set at 20 degree. The eye movement or upper limb movement was measured (Control) after the training session for each movement. After that the floor vibration for 1 minute was repeated 11 times. The eye movement or upper limb movement was simultaneously performed in the 1st and llth trials.For all subject-groups, the mean speed of the fluctuation of center of foot pressure decreased in initial trials, while after that it was constantly maintained till the 10th trial. The mean speed in the llth trial was significantly increased relative to that in the 10th trial for all subject-groups except S-group. This increase was significantly greater for T-group than for R-group. The eye movement performance of the 1st trial in only for S-group was inferior to that of Control and the llth trial. A similar phenomenon was found in the performance of the upper limb movement for R- and T-groups. These results suggest that (1) simultaneous postural control with the eye movement or the upper limb movement improves with automatization of postural control, (2) the large interference occurs when the more voluntary movement was simultaneously performed with postural control. Less

我们研究了地板振动过程中眼球运动和上肢运动控制的自动化，受试者是健康的大学生，他们都没有经历过地板振动（S组，n=）。眼动采用平滑追踪运动（P组，n=10）和反应运动（R组，n=10）和跟踪运动（T组，n=10）。上肢运动。安装有力平台的工作台在振幅为 2.5 cm、频率为 0.5 Hz 的条件下进行正弦振动，视觉目标呈现在面部安装显示器上，使用电传感器拾取眼睛和上肢的运动。分别提出了眼图技术和由上肢控制的电位计电信号对于T组，提出了由电位计电信号控制的跟踪视觉目标的点。对于S组和R组，视觉目标在2-4秒的时间内交替向左和向右移动，而对于P组和T组，视觉目标在0.3 Hz的条件下水平正弦移动。 -组的视角设置为20度，在每次运动训练后测量眼球运动或上肢运动，然后重复1分钟的地板振动。第1次和第11次试验同时进行上肢运动。对于所有受试者组，足部压力中心波动的平均速度在初始试验中下降，而之后在第10次试验中一直保持到第10次试验。除 S 组外，所有受试者组的眼动表现均显着高于第 10 次试验。仅在第 1 次试验中，T 组的眼动表现显着高于 R 组。 S 组的上肢运动表现低于对照组，并且在第 1 次试验中也发现了类似的现象。这些结果表明：（1）同时进行姿势控制和眼球运动。上肢运动随着姿势控制的自动化而改善，（2）当更多的随意运动与姿势控制同时进行时，会出现较大的干扰。