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

我们调查了控制眼运动和上肢运动的控制变化，并在地板振动期间自动化了姿势控制。受试者是健康的大学生，所有人都没有地板振动的经验。采用了眼球运动（S组，n = 9）和光滑的追捕眼运动（p组，n = 10）作为眼动。反应运动（R组，n = 10）和跟踪运动（T组，n = 10）被用作上肢运动。在2.5 cm振幅和0.5 Hz频率的情况下，用力平台安装的振动表被振动的正弦曲线振动。在面部安装显示屏上显示了一个视觉目标。通过分别由上肢控制的电位计的电量表技术和电信号拾取了眼睛和上肢的运动。对于T组，这是一个遵循视觉目标的位置，该位点由电位计的电信号控制，…在面部安装显示屏上显示了更多。对于S-和R组的2-4 s随机持续时间，视觉目标被移动到左右移动，并在p组和T组的0.3 Hz的情况下以水平水平移动正弦。将视觉视为20度。在训练会议后，测量了眼睛运动或上肢运动（对照）。之后，重复了11分钟的地板振动11次。眼睛运动或上肢运动仅在第1和LLTH试验中进行。对于所有主题组，在初始试验中，脚压力的波动的平均速度降低了，而此后一直将其一直保持到第10次试验。相对于除S组以外的所有受试者组，LLTH试验中的平均速度显着提高。对于T组而言，这种增加明显大于R组。仅针对S组的第一次试验的眼睛运动表现不如控制和第LLTH试验。在R-和T组的上肢运动的性能中发现了类似的现象。这些结果表明（1）通过姿势控制自动化，具有眼动或上肢运动的简单姿势控制改善，（2）当简单地通过姿势控制进行更自愿运动时，发生大干扰。较少的