Deliagina T G, Orlovsky G N
Brain Res. 1980 Jul 14;193(2):439-47. doi: 10.1016/0006-8993(80)90176-6.
(1) The fictitious scratch reflex was observed in decerebrate cats immobilized with Flaxedil. The activity of interneurons in the inhibitory pathways from Ia afferents to motoneurons of antagonistic muscles was recorded during scratching. The selected interneurons were supplied by Ia afferents from m. vastus, posterior biceps-semitendinosus and sartorius. (2) Almost all recorded interneurons showed periodic modulation of activity. Their maximal activity in the scratch cycle usually coincided with the maximal activity of motoneurons of those muscles from which the interneurons receive Ia afferents. Excitation of Ia afferents by passive stretch of the muscle or by electrical stimulation of the muscle nerve resulted in the increase of the interneuron activity, without changing its timing in the scratch cycle.
(1) 在使用三碘季铵酚固定的去大脑猫中观察到假搔扒反射。在搔扒过程中记录了从Ia传入纤维到拮抗肌运动神经元的抑制性通路中中间神经元的活动。所选中间神经元由股直肌、股二头肌-半腱肌和缝匠肌的Ia传入纤维提供。(2) 几乎所有记录的中间神经元都表现出活动的周期性调制。它们在搔扒周期中的最大活动通常与那些中间神经元接收Ia传入纤维的肌肉的运动神经元的最大活动一致。通过被动拉伸肌肉或电刺激肌肉神经来兴奋Ia传入纤维，会导致中间神经元活动增加，而不会改变其在搔扒周期中的时间。
