ON SILENT PERIOD AND GOLGI TENDON ORGANS OF SOLEUS MUSCLE OF CAT
ON SILENT PERIOD AND GOLGI TENDON ORGANS OF SOLEUS MUSCLE OF CAT
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DOI：
10.1111/j.1748-1716.1964.tb10435.x
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发表时间：
1964-01-01
期刊：
影响因子：
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通讯作者：
RUDJORD, T
中科院分区：
文献类型：
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作者：
JANSEN, JKS;RUDJORD, T
研究了颈间去脑猫在抽搐收缩时比目鱼肌的静默期。静默期的持续时间与肌肉的初始张力无关，尽管随着肌肉串联插入不同顺应性的弹簧，抽搐张力有很大变化，但静默期的持续时间保持不变。本文研究了猫麻醉后比目鱼肌42个肌腱器官对抽动收缩、被动拉伸和融合强直收缩的反应。大多数肌腱器官对主动收缩的阈值明显低于被动拉伸的阈值。它们都被张力小于160克的等距抽搐刺激。在等长、分级、融合强直收缩时，肌腱器官的放电频率与肌肉张力呈近似线性关系。这种关系的斜率在2到18 imp/sec/ 100g之间变化。由此得出结论，猫的静止期的持续时间主要是由肌肉纺锤体初级末梢在抽搐时放电的暂停决定的。
The silent period in the soleus during twitch contractions has been studied in intercollicularly de-cerebrated cats. The duration of the silent period was independent of the initial tension in the muscle and remained constant in spite of large variations in the twitch tension with springs of varying compliances inserted in series with the muscle. The responses of 42 tendon organs of the soleus to twitch contractions, passive stretch and fused tetanic contractions have been determined in Nembutal anaesthetized cats. The majority of the tendon organs had appreciably lower thresholds to active contraction than to passive stretch of the muscle. They were all excited by isometric twitches developing less than 160 g tension. There was an approximately linear relationship between the discharge frequency of the tendon organs and the tension in the muscle during isometric, graded, fused tetanic contractions of the muscle. The slope of this relationship varied between 2 and 18 imp/sec/100 g. It is concluded that the duration of the silent period in the decerebrate cat is primarily determined by the pause in the discharge of the primary endings of the muscle spindle during the twitch.