Baev K V
Neirofiziologiia. 1980;12(5):481-9.
Changes in electric polarization of lumbosacral primary afferent terminals were studied during fictious locomotion of immobilized decorticated and spinal cats. Fictitious locomotion was accompanied by a stable hyperpolarization of afferent terminals. In the presence of hyperpolarization a periodic depolarization took place with the rhythm of efferent activity. These tonic and phasic changes were observed in the terminals of all the studied groups of afferent fibres (cutaneous and muscle Ia and Ib). Periodic depolarization was in-phase indifferent ipsilateral lumbosacral segments. During fictitious gallop the changes in depolarization of primary afferent terminals were in-phase on different sides; during fictitious walking these periodic changes were of out-of-phase character. Physiological significance of changes in electric polarization of primary afferent terminals by the spinal locomotor generator is discussed on the basis of the data obtained.
在去大脑皮层和脊髓的固定猫的虚拟运动过程中,研究了腰骶部初级传入终末的电极化变化。虚拟运动伴随着传入终末的稳定超极化。在超极化存在的情况下,随着传出活动的节律发生周期性去极化。在所有研究的传入纤维组(皮肤、肌肉Ia和Ib)的终末中均观察到这些紧张性和相位性变化。周期性去极化在同侧腰骶节段是同相的。在虚拟奔跑过程中,初级传入终末去极化的变化在不同侧是同相的;在虚拟行走过程中,这些周期性变化具有异相特征。根据所获得的数据,讨论了脊髓运动发生器对初级传入终末电极化变化的生理意义。