Illert M, Lundberg A, Tanaka R
Exp Brain Res. 1976 Dec 22;26(5):509-19. doi: 10.1007/BF00238824.
Stimulation of the contralateral pyramid and intracellular recording from forelimb motoneurones was used to investigate corticimotoneuronal pathways in the cat. A train of pyramidal volleys evokes short-latency EPSPS in flexor motoneurones and in many extensor motoneurones. The latency for the onset after the effective pyramidal volley-usually the third - strongly indicates a disynaptic linkage. These disynaptic EPSPs were common in triceps motoneurones to fast heads but rare in those to slow heads. Pyramidal IPSPs with a slightly longer latency, suggesting a trisynaptic linkage, were found in both flexor and extensor motoneurones. They were common in motoneurones to slow heads of triceps. Disynaptic pyramidal IPSPs were found only occasionally. In addition pyramidal volleys may evoke late large EPSPs and/or IPSPs in any combination with the short-latency PSPs.
刺激对侧锥体并从前肢运动神经元进行细胞内记录，以研究猫的皮质运动神经元通路。一串锥体冲动在屈肌运动神经元和许多伸肌运动神经元中诱发短潜伏期兴奋性突触后电位（EPSPS）。有效锥体冲动后（通常是第三个）开始的潜伏期强烈表明是双突触联系。这些双突触EPSP在肱三头肌运动神经元支配快肌头时很常见，但在支配慢肌头时很少见。潜伏期稍长的锥体抑制性突触后电位（IPSP）表明是三突触联系，在屈肌和伸肌运动神经元中均有发现。它们在肱三头肌慢肌头的运动神经元中很常见。双突触锥体IPSP只是偶尔发现。此外，锥体冲动可能与短潜伏期的突触后电位以任何组合形式诱发晚期大EPSP和/或IPSP。
