Baltina T V, Eremeev A A, Pleshchinskii I N
State University, Kazan', Russia.
Neurosci Behav Physiol. 2006 May;36(4):385-9. doi: 10.1007/s11055-006-0029-5.
The effects of unilateral transection of the Achilles tendon (tenotomy) on the electromyographic characteristics of the gastrocnemius muscle on the contralateral side were studied in rats. Motor responses, reflex responses, and motor unit spike activity in the contralateral gastrocnemius muscle were studied in baseline conditions and on afferent stimulation before and 10 days after tenotomy. Changes in the nature of motor unit spike activity and responses to afferent stimulation were observed. The results obtained here demonstrate increases in the excitability of individual motoneurons in the contralateral motor center of the gastrocnemius muscle after exclusion of the symmetrical gastrocnemius muscle from the overall pattern of movement activity.
在大鼠中研究了单侧切断跟腱（跟腱切断术）对同侧腓肠肌肌电图特征的影响。在基线条件下以及跟腱切断术前和术后10天对传入神经进行刺激时，研究了同侧腓肠肌的运动反应、反射反应和运动单位放电活动。观察到运动单位放电活动的性质以及对传入神经刺激的反应发生了变化。此处获得的结果表明，在将对称的腓肠肌从整体运动活动模式中排除后，同侧腓肠肌运动中枢中单个运动神经元的兴奋性增加。
