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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

对 5 名年轻成年男性施加相同的科里奥利刺激，在抛物线飞行期间以 1 G 和 μ G 进行，并且在视力遮挡的情况下，记录姿势变化和眼球运动。使用线性加速度计记录姿势变化，并得出移动距离。眼球运动被记录到视频中，并通过图像分析得出水平、垂直和扭转分量。得到以下结论:1)在旋转过程中头部倾斜时,上半身在1G下向惯性输入方向线性加速。在μG下,身体首先向惯性力方向加速,然后向惯性输入方向加速。以 100 度/秒旋转时头部倾斜后一秒内的位移在 1 G 下沿惯性输入方向为 10 cm，在 μG 下沿惯性力方向为 4 cm。2) 无论 1 G 或 μG，眼球运动与惯性输入一致。头部倾斜后立即出现的眼球震颤峰值 slo … 更多 w 相速度，无论是水平分量、垂直分量还是扭转分量，都没有表明两种条件之间存在明显差异。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，随着该参考消失，惯性力不会产生输出。因此，在μG时，运动感觉较弱，对惯性输入的姿势反应消失。4）即使外部参考在μG下消失，由于以头部为参考的惯性输入仍然适用，因此会引起与1G相似程度的眼球震颤。推测来自前庭器官的惯性输入通过参考前庭中再现的外部坐标来产生空间运动信息原子核。该坐标信息在大脑皮层内产生运动感觉，并通过前庭小脑束进行坐标转换，小脑统一改变姿势。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