MOTOR UNIT RECRUITMENT AND FIRING RATES INTERACTION IN THE CONTROL OF HUMAN MUSCLES
MOTOR UNIT RECRUITMENT AND FIRING RATES INTERACTION IN THE CONTROL OF HUMAN MUSCLES
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DOI：
10.1016/0006-8993(85)90068-x
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发表时间：
1985-01-01
期刊：
影响因子：
2.9
通讯作者：
MAMBRITO, B
中科院分区：
文献类型：
--
作者：
BROMAN, H;DE LUCA, CJ;MAMBRITO, B
肌肉收缩由运动单位的数量和它们各自的放电率来调节。本报告中描述的工作记录了运动单位的招募和发射率之间的相互作用。一个新的运动单位的招聘似乎有一个disfacilitative影响的放电率先前激活的运动单位。这种效应可能是介导的，至少部分地，通过牵张反射回路，并可能通过经常性抑制伦肖电路。这种机制在功能上可用于通过外周回路（由本体感受反射和复发性抑制组成）提供肌肉输出的平滑控制，从而减少α-肌的详细监督量。CNS所需的运动神经元池。
Muscle contractions are modulated by the number of motor units recruited and their respective firing rates. The work described in this report documents an interplay between recruitment and firing rates of motor units. The recruitment of a new motor unit appears to have a disfacilitatory influence on the firing rates of previously activated motor units. This effect is likely to be mediated, at least partially, via the stretch reflex loop and possibly by the recurrent inhibition of the Renshaw circuit. Such a mechanism would be functionally useful in providing smooth control of muscle output via peripheral circuitry (consisting of proprioceptive reflexes and recurrent inhibition), thus lessening the amount of detailed supervision of the .alpha.-motoneuron pool required by CNS.