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

在抛物线飞行过程中，以1 g和μg的速度将相同的科里奥利刺激应用于五名年轻男性，并记录了视力，姿势变化和眼部运动。使用线性加速度计记录姿势变化，并得出运动距离。将眼运动记录为视频，并通过图像分析，水平，垂直和扭转成分得出。 1）在旋转过程中的头部倾斜时，上半身将上部线性加速到1 g处的惯性输入方向。在μg下，首先将身体加速到惯性力的方向，其次，其次是惯性输入方向。在100度旋转时头部旋转期间头部倾斜后的一秒钟内的位移在1 g时惯性输入方向为10 cm，在μg.2下惯性力的方向上的惯性输入方向为4 cm。 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.因此，在μg下，运动感觉很弱，对惯性输入的姿势反应消失。核。该坐标信息会在大脑皮层内产生运动感，并通过通过前庭脑室的坐标转换，小脑会均匀地改变姿势。较少的

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