Elshina M A, Bursian A V
Zh Evol Biokhim Fiziol. 1985 Jul-Aug;21(4):384-9.
Experiments were performed in order to investigate whether the capacity of periodic motor excitation in rats during early postnatal life is the intrinsic feature of immature spinal cord or it is caused by supraspinal input. It was shown that after low spinal cord transection, birsts of periodic activity can still be obtained in m. gastrocnemius but their duration and amplitude are significantly reduced. After brain stem transection at intercollicular level, this type of activity remains unchanged or slightly increased. It was concluded that periodic motor excitation is due to the spinal mechanisms but bulbo-spinal facilitative influences are necessary for normal intensity of autogenic activity.
进行实验以研究出生后早期大鼠周期性运动兴奋的能力是未成熟脊髓的固有特征还是由脊髓上输入引起的。结果表明，低位脊髓横断后，腓肠肌仍可获得周期性活动爆发，但其持续时间和幅度显著减小。在丘间水平进行脑干横断后，这种类型的活动保持不变或略有增加。得出的结论是，周期性运动兴奋是由于脊髓机制，但延髓-脊髓促进性影响对于自主性活动的正常强度是必要的。
