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相关概念视频

Relative Motion Analysis using Rotating Axes-Problem Solving01:29

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Consider a crane whose telescopic boom rotates with an angular velocity of 0.04 rad/s and angular acceleration of 0.02 rad/s2. Along with the rotation, the boom also extends linearly with a uniform speed of 5 m/s. The extension of the boom is measured at point D, which is measured with respect to the fixed point C on the other end of the boom. For the given instant, the distance between points C and D is 60 meters.
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The inner ear assumes dual functionalities of auditory perception and equilibrium maintenance. The vestibule is the organ responsible for balance. This organ contains mechanoreceptors, specifically hair cells, endowed with stereocilia, which aid in deciphering information regarding the position and motion of our heads. Two intrinsic components, the utricle and saccule, help perceive head position, while the semicircular canals track head movement. Neurological messages initiated in the...
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Consider a coffee mug hanging on a hook in a pantry. If the mug gets knocked, it oscillates back and forth like a pendulum until the oscillations die out.
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Consider a component AB undergoing a linear motion. Along with a linear motion, point B also rotates around point A. To comprehend this complex movement, position vectors for both points A and B are established using a stationary reference frame. The absolute velocity of point B is determined by adding the absolute velocity of point A, the relative velocity of point B in the rotating frame, and the effects caused by the angular velocity within the rotating frame.
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相关实验视频

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Assessment of Static Graviceptive Perception in the Roll-Plane using the Subjective Visual Vertical Paradigm
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使用电梯进行地球垂直运动感知评估:可行性研究

Simona Schellenberg1, Dominik Straumann2,3, David Andrew Green4,5,6

  • 1Physiotherapy and Occupational Therapy Research Center, Directorate of Research and Education, University Hospital Zurich, Zurich, Switzerland.

Scientific reports
|June 9, 2023
PubMed
概括
此摘要是机器生成的。

测量电梯减速的反应时间提供了一种简单,低成本的方法来评估前庭垂直运动感知. 这种技术可靠地表明健康个体的线性前庭运动感.

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科学领域:

  • 神经科学是一个神经科学.
  • 垂体系统的功能 垂体系统功能
  • 人类的感知 人类的感知

背景情况:

  • 在头患者中评估阴囊介导的耳骨功能需要一种简单,快速的方法来测量前庭垂直运动感知.
  • 目前的方法可能很复杂或昂贵,需要一种更容易获得的方法.

研究的目的:

  • 评估使用响应垂直电梯运动的反应时间测量的可行性,以评估前庭垂直运动感知.
  • 建立一个低成本,用户友好的方法来评估耳骨功能.

主要方法:

  • 20名健康的年轻人接受了在电梯中对线性加速/减速 (LA-RT/LD-RT) 的反应时间的测试.
  • 试验对象通过按下按来表示感知速度的变化;光反应时间作为参考.
  • 分析了上升和下降电梯乘坐的数据,特别注意过早按和技术排除.

主要成果:

  • 电梯对地球垂直减速的反应时间被证明是健康个体线性前庭运动感知的一致指标.
  • 向上行驶期间的减速 (LD-RT-up) 产生了最强大和最可靠的结果,预先反应最小.
  • 评估程序被人接受得很好,成本低廉,易于实施,技术排除率低.

结论:

  • 对电梯诱导减速的反应时间测量是一种可行的,廉价和快速的方法,用于评估前庭垂直运动感知.
  • 这种技术提供了一种可靠的工具来评估囊介导的耳骨功能,特别是在临床环境中.
  • 最强大的测量是在上升的电梯行驶中获得的,检测了减速.