Tamarova Z A
Fiziol Zh SSSR Im I M Sechenova. 1977 Jun;63(6):806-13.
The postsynaptic effects evoked in lumbar motoneurons by stimulation of different muscle and cutaneous nerves of hindlimbs were studied by means of intracellular recording in the frog isolated spinal cord. The data obtained confirm presence of monosynaptic connections between primary afferents and spinal motoneurons. Monosynaptic EPSPs were shown to be due to low threshold muscle afferent volleys in homonymous nerves and did not generate spike discharges. The mean amplitude of monosynaptic EPSPs was 1.1 +/- 0.12 mV, time-to-peak 1.76 +/- 0.16 msec, time constant of decay from 6.0 to 15.0 msec. EPSPs with no synaptic delay were recorded in some motoneurons which suggest existence of an electrical mechanism of transmission.
通过在离体蛙脊髓上进行细胞内记录，研究了刺激后肢不同肌肉和皮肤神经在腰运动神经元中诱发的突触后效应。所获得的数据证实了初级传入神经与脊髓运动神经元之间存在单突触联系。单突触兴奋性突触后电位（EPSP）显示是由于同名神经中低阈值肌肉传入冲动所致，且不产生锋电位发放。单突触EPSP的平均幅度为1.1±0.12毫伏，达峰时间为1.76±0.16毫秒，衰减时间常数为6.0至15.0毫秒。在一些运动神经元中记录到了无突触延迟的EPSP，这表明存在电传递机制。
