去大脑猫的体位对交叉伸展反射的影响：股直肌比股内侧肌更敏感。

Effects of body position on crossed extension reflex in decerebrate cat: rectus femoris is more sensitive than is vastus medialis.

作者信息

McMillan J A, Hannon P R, Stevenson L M, Van Natta T L

机构信息

Biology Department, Montana State University, Bozeman 59717.

出版信息

Brain Res. 1991 Jan 4;538(1):152-6. doi: 10.1016/0006-8993(91)90390-h.

DOI:10.1016/0006-8993(91)90390-h

PMID:2018927

Abstract

Physiological stimuli which increase postural extensor tone also increase excitability of the crossed extension reflex (CER). We report here that such stimuli increase excitability of the CER recorded from rectus femoris (RF) more than that of vastus medialis (VM). The difference might reflect an important role of the biarticular actions of RF, which is also a weak hip flexor, in stabilizing the hip as well as extending the knee during maintenance of posture.

摘要

增加姿势性伸肌张力的生理刺激也会增加交叉伸展反射（CER）的兴奋性。我们在此报告，此类刺激增加股直肌（RF）记录到的CER兴奋性的程度大于股内侧肌（VM）。这种差异可能反映了RF双关节动作（RF也是较弱的髋屈肌）在维持姿势期间稳定髋关节以及伸展膝关节方面的重要作用。