Modulation of cutaneous reflexes in human upper limb muscles during arm cycling is independent of activity in the contralateral arm
Modulation of cutaneous reflexes in human upper limb muscles during arm cycling is independent of activity in the contralateral arm
复制标题
DOI：
10.1007/s00221-004-2050-7
复制
发表时间：
2005-02-01
影响因子：
2
通讯作者：
Collins, D
中科院分区：
文献类型：
--
作者：
Carroll, T;Zehr, E;Collins, D
皮肤反射的幅度和迹象在胳膊和腿的有节奏的运动中被调节（例如，在走路和胳膊或腿骑自行车时）。这种反射调制通常独立于背景肌肉活动，可能涉及中枢模式发生器（CPG）回路。本研究的目的是研究手臂循环过程中上肢之间耦合的性质和程度，以及对皮肤反射的调节。研究记录了8名受试者在手臂循环过程中，对右桡浅神经（5个1 ms脉冲，300 Hz）电刺激的反应，这些反应只涉及刺激的同侧肢体，只涉及刺激的对侧肢体，以及当四肢同时处于同相和180度非同相时的双侧运动。整个手臂周期的皮肤反射调节模式与记录部位对侧肢体的功能状态无关，无论记录是在刺激的同侧还是对侧进行的。此外，皮肤反射明显(p
The amplitudes and signs of cutaneous reflexes are modulated during rhythmic movements of the arms and legs (during walking and arm or leg cycling for instance). This reflex modulation is frequently independent of the background muscle activity and may involve central pattern generator (CPG) circuits. The purpose of the present study was to investigate the nature and degree of coupling between the upper limbs during arm cycling, with regard to the regulation of cutaneous reflexes. Responses to electrical stimulations of the right, superficial radial nerve (five 1 ms pulses, 300 Hz) were recorded bilaterally in six arm muscles of eight participants during arm cycling involving only the limb ipsilateral to the stimulation, only the limb contralateral to the stimulation, and bilateral movement when the limbs were both in-phase and 180degrees out of phase. The pattern of cutaneous reflex modulation throughout the arm cycle was independent of the functional state of the limb contralateral to the recording site, irrespective of whether recordings were made ipsilateral or contralateral to the stimulation. Furthermore, cutaneous reflexes were significantly (p