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Study of spatial orientation and posture regulation under IG and microgravity

IG和微重力下的空间定向和姿态调节研究

基本信息

批准号：
16591727
负责人：
TAKAHASHI Masahiro
金额：
$ 1.6万
依托单位：
Tokai University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2004
资助国家：
日本
起止时间：
2004 至 2005
项目状态：
已结题

项目摘要

Same Coriolis stimulation was applied to five young adult males, at 1 G and μ G during parabolic flights and with occluded vision, postural changes and ocular movements were recorded. Postural changes were recorded using a linear accelerometer, and the distance of movement was derived. Ocular movement was recorded to video, and via image analysis, horizontal, vertical, and torsional components were derived. The following conclusions were obtained.1)With the head tilted during rotation, the upper body was linearly accelerated to the direction of inertial input at 1 G. Under μ G, the body was first accelerated to the direction of inertial force, and, second, to the direction of inertial input. The displacement in a one-second period after head tilt during rotation at 100 degrees/second was 10 cm in the direction of inertial input at 1 G, and 4 cm in the direction of inertial force under μG.2)Irrespective of 1 G or μG, ocular movement was consistent with inertial input. Nystagmus peak slo … More w-phase velocity immediately after head tilt, either of horizontal, vertical or torsional component, did not indicate clear differences between both conditions.3)At 1 G, external coordinates in which gravity functions as the Z axis are used as the reference for the inertial input, but at μ G as this reference disappears, inertial force does not produce output. Therefore, at μ G, sensation of motion is weak and postural responses to the inertial input disappear.4)Even if external references disappear under μ G, as inertial input for the head as a reference still applies, a similar degree of nystagmus is induced to that seen with 1 G.It is surmised that the inertial input from vestibular organs produces spatial movement information by referring external coordinates reproduced in the vestibular nuclei. This coordinate information produces a sensation of motion within the cerebral cortex, and by coordinate conversion through the vestibulocerebellar tract, posture is uniformly changed by the cerebellum. Less

在抛物线飞行期间，在1G和μ G下对5名年轻成年男性施加相同的Coriolis刺激，并记录视力遮挡的姿势变化和眼球运动。使用线性加速度计记录姿势变化，并推导出运动距离。眼球运动记录到视频，并通过图像分析，水平，垂直和扭转分量。得到以下结论：1）旋转过程中，头部倾斜，上半身以1 G的速度向惯性输入方向线性加速度。在μ G下，物体首先被加速到惯性力的方向，其次是惯性输入的方向。100 °/s旋转时，倾斜后1秒内的位移在1 G时惯性输入方向为10 cm，在μ G时惯性力方向为4 cm。2）无论1 G还是μG，眼动都与惯性输入一致。眼球震颤峰值 ...更多信息头倾斜后的w相速度，无论是水平、垂直还是扭转分量，在两种情况下都没有明显的差异。3）在1 G时，以重力作为Z轴的外部坐标作为惯性输入的参考，但在μ G时，由于该参考消失，惯性力不产生输出。因此，在μ G下，运动感觉很弱，对惯性输入的姿势反应消失。4）即使外部参考在μ G下消失，由于头部的惯性输入作为参考仍然适用，诱发的眼球震颤程度与1G相似。据推测，来自前庭器官的惯性输入通过参考前庭器官中再现的外部坐标来产生空间运动信息。原子核。这种坐标信息在大脑皮层内产生运动的感觉，通过前庭小脑束的坐标转换，姿势由小脑统一改变。少

项目成果

期刊论文数量（12）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Uniform regulation of posture, gait, and eye movement through perception of the outer world. In : From Basic Motor Control to Functional Recovery IV

通过感知外部世界来统一调节姿势、步态和眼球运动。

DOI：
发表时间：
2005
期刊：
影响因子：
0
作者：
Masahiro Takahashi;Motoki Sekine
通讯作者：
Motoki Sekine

Effect of microgravity on spatial orientation and posture regulation during Coriolis stimulation

微重力对科里奥利刺激过程中空间定向和姿势调节的影响

DOI：
发表时间：
2004
期刊：
Acta Otolaryngologica 124
影响因子：
0
作者：
Masahiro Takahashi;Motoki Sekine;Takuo Ikeda;Koichi Watanuki;Shuzo Hakuta;Hajime Takeoka
通讯作者：
Hajime Takeoka

Analysis of posture and ocular movement responses to Coriolis stimulation under 1G and microgravity conditions

1G和微重力条件下科里奥利刺激的姿势和眼动反应分析