Fagioli S, Berardelli A, Hallett M, Accornero N, Manfredi M
Dipartimento di Scienze Neurologiche, Universitá di Roma La Sapienza, Italia.
Mov Disord. 1988;3(2):126-32. doi: 10.1002/mds.870030204.
Rapid elbow flexion movements were studied in patients with an upper motor neuron syndrome following a stroke. The velocity of movements was slower than normal. The initial bursts of electromyographic (EMG) activity in both the agonist and antagonist muscles were prolonged. As in normal subjects, the first agonist burst increased in duration with larger movements, but it generally remained about 40 ms longer than normal. The size of the first agonist burst also increased with larger movements. A fixed linkage between burst duration and level of motor unit recruitment, together with a deficient corticospinal command, could explain the prolonged burst duration with preserved ability to modulate the burst.
对中风后上运动神经元综合征患者的快速屈肘运动进行了研究。运动速度比正常情况慢。主动肌和拮抗肌的肌电图（EMG）活动的初始爆发期延长。与正常受试者一样，随着运动幅度增大，首次主动肌爆发期的持续时间增加，但通常比正常情况长约40毫秒。首次主动肌爆发期的幅度也随着运动幅度增大而增加。爆发期持续时间与运动单位募集水平之间的固定联系，以及皮质脊髓指令不足，可以解释爆发期延长且仍具备调节爆发的能力。
