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人站立的平衡受不稳因素影响时,从不同的感觉系统如躯体感觉、视觉和前庭系统形成一体化的信息产生一个行为反应,恰当地保持平衡。每个系统各有操纵的专门区域和全面地控制着直立性体位。代偿缓慢倾斜是多半从视觉和前庭系统中获得,而较快的代偿运动是来自肌肉本体感觉的反馈机制。然而,人姿态的稳定性在前庭系统的实际作用仍在争论中。采用不同的头-体姿态实验中,把肌肉感受器的活动度归因于张力改变的效果,已在脊髓中间神经元与α-运动神经二者同时进行观
When a person’s balance of standing is affected by instability, a behavioral response arises from the integration of different sensory systems such as somatosensory, visual, and vestibular systems, properly balanced. Each system has its own specialized area of manipulation and full control of the orthostatic posture. Slow compensatory tilt is mostly obtained from the visual and vestibular systems, whereas faster compensatory movement is a feedback mechanism from the muscular proprioception. However, the actual role of human stance in the vestibular system is still under debate. Using different head-body posture experiments, the activity of the muscle receptors was attributed to the effect of the change in tension, which has been observed both in the spinal cord and in the motor neuron