Lackner J R
Exp Neurol. 1984 Jul;85(1):107-13. doi: 10.1016/0014-4886(84)90165-1.
Mechanically vibrating a skeletal muscle elicits reflex activation of that muscle, a phenomenon which is known as the tonic vibration reflex. We explored in eight individuals how vibration of their right biceps brachii or triceps brachii muscle influenced their ability to point with their left arm to visual targets and to set that arm to particular apparent positions. The position sense of the pointing arm was affected systematically by contralateral vibration with the influence being considerably greater when the biceps brachii rather than the triceps brachii of the contralateral arm was stimulated. This asymmetric effect was related to the different densities of muscle spindle innervation of the biceps brachii and triceps brachii muscles and to their patterns of reflex organization within the spinal cord. The altered position sense of the pointing arm led to errors both for pointing movements with the arm to visual targets and for positioning movements of the arm into specified spatial configurations.
对骨骼肌进行机械振动会引发该肌肉的反射性激活，这一现象被称为紧张性振动反射。我们对八名受试者进行了研究，观察右侧肱二头肌或肱三头肌的振动如何影响他们用左臂指向视觉目标以及将该手臂设定到特定视在位置的能力。指向手臂的位置觉受到对侧振动的系统性影响，当刺激对侧手臂的肱二头肌而非肱三头肌时，这种影响要大得多。这种不对称效应与肱二头肌和肱三头肌肌梭神经支配密度的差异以及它们在脊髓内的反射组织模式有关。指向手臂位置觉的改变导致手臂指向视觉目标的运动以及将手臂定位到指定空间构型的运动都出现误差。
