Tan U
Atatürk University, Medical Faculty, Institute of Physiology, Erzurum, Turkey.
Int J Neurosci. 1990 May;52(1-2):17-23. doi: 10.3109/00207459008994239.
The claim that there is not a consistent inhibition of the H-reflex from the dominant leg was examined and rejected. Hand preference was assessed by the Edinburgh Inventory, and hand skill by the peg moving task. All the subjects were right-handed in preference and skill. It was re-established that there is an inverse relationship between hand skill and the excitability of motoneurons innervating the postural soleus muscle in right-handed female subjects without familial sinistrality. There was no significant difference between the recovery curves from the right and left sides in subjects with familial sinistrality. The H reflex from right leg was different between these right-handers. There was a positive linear correlation between the asymmetry index of hand skill greater than zero (right-hand dominance) and the asymmetry index for H-reflex recovery curve greater than zero (left dominance in reflex activity). It was concluded that there is a spinal motor asymmetry in postural leg muscles to handedness.
关于优势腿的H反射不存在持续抑制的说法经过检验后被否定。通过爱丁堡手部偏好量表评估手部偏好，通过移 peg 任务评估手部技能。所有受试者在偏好和技能方面均为右利手。研究再次证实，在没有家族性左利手的右利手女性受试者中，手部技能与支配姿势性比目鱼肌的运动神经元兴奋性之间存在反比关系。有家族性左利手的受试者左右两侧的恢复曲线之间没有显著差异。这些右利手者右腿的H反射有所不同。手部技能不对称指数大于零（右利手优势）与H反射恢复曲线不对称指数大于零（反射活动中左利手优势）之间存在正线性相关。研究得出结论，姿势性腿部肌肉的脊髓运动存在与利手相关的不对称性。
