脊髓背侧刺激对牵张反射的影响。

Effects of dorsal cord stimulation on stretch reflexes.

作者信息

Chapman C E, Ruegg D G, Wiesendanger M

出版信息

Brain Res. 1983 Jan 10;258(2):211-5. doi: 10.1016/0006-8993(83)91144-7.

Abstract

The effects of dorsal cord stimulation on phasic and tonic stretch reflex activity in extensor muscles were studied in decerebrate cats. The tonic stretch response was depressed in both fore- and hindlimb (stimulation at levels C1 and T8, respectively) and this often persisted for 5-20 min after the end of 1-10 min of dorsal cord stimulation. Depression of the phasic stretch response was only consistently seen in the forelimb during stimulation (C1) and this rarely outlasted the period of stimulation. These results support the idea that dorsal cord stimulation can reduce muscle tone but provide no explanation for the long-lasting effects of chronic, continuous stimulation in spastic man.

摘要

在去大脑猫中研究了脊髓背侧刺激对伸肌的相位性和紧张性牵张反射活动的影响。前肢和后肢的紧张性牵张反应均受到抑制（分别在C1和T8水平进行刺激），并且在脊髓背侧刺激1 - 10分钟结束后，这种抑制通常会持续5 - 20分钟。仅在刺激期间（C1），前肢的相位性牵张反应抑制才始终可见，并且这种抑制很少持续超过刺激期。这些结果支持脊髓背侧刺激可降低肌张力的观点，但无法解释在痉挛性患者中慢性持续刺激的长期效果。