小幅度拉伸过程中肌梭运动神经刺激对哺乳动物肌梭初级末梢频率反应的影响。
The effects of fusimotor stimulation during small amplitude stretching on the frequency-response of the primary ending of the mammalian muscle spindle.
作者信息
Goodwin G M, Hulliger M, Matthews P B
出版信息
J Physiol. 1975 Dec;253(1):175-206. doi: 10.1113/jphysiol.1975.sp011186.
Abstract
Single fusimotor fibres to the de-efferented soleus of the anaesthetized cat were stimulated repetitively while recording the response of single primary afferents to small amplitude sinusoidal stretching at frequencies of 0-5--500 HZ. The response of the ending was determined by averaging its firing for many cycles to construct a 'cycle histogram'. When small enough, the stretching modulated the firing sinusoidally; as the frequency increased the requisite amplitude fell to a fraction of a micron. The amplitude of the modulation (in impulses/sec) divided by be amplitude of stretchin (in mm) gave the sensitivity of the ending for the particular frequency in question. 2. The passive frequency--response curve obtained in the absence of fusimotor stimulation agreed with those obtained before...
摘要
在对麻醉猫的去传入比目鱼肌的单根肌梭运动纤维进行重复刺激的同时，记录单根初级传入纤维在0.5 - 500赫兹频率下对小幅度正弦拉伸的反应。通过对许多周期的放电进行平均来构建“周期直方图”，从而确定末梢的反应。当拉伸幅度足够小时，它会以正弦方式调制放电；随着频率增加，所需的拉伸幅度降至微米级的几分之一。调制幅度（每秒脉冲数）除以拉伸幅度（毫米），得出所研究特定频率下末梢的敏感性。2. 在没有肌梭运动刺激的情况下获得的被动频率 - 反应曲线与之前获得的曲线一致……
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