McComas A J, Mirsky M, Velho F, Struppler A
J Neurol Neurosurg Psychiatry. 1979 Dec;42(12):1091-9. doi: 10.1136/jnnp.42.12.1091.
Using combinations of H and T reflexes, spatial summation has been studied in the human soleus motoneurone pool. With certain assumptions, mathematical treatment of the results yielded estimates of the thresholds of motoneurones to monosynaptic activation by Ia nerve fibres. It was found that, on average, about 62 EPSPs were required to discharge a motoneurone and that a single Ia fibre supplied about 139 neurones.
利用H反射和T反射的组合，已对人类比目鱼肌运动神经元池的空间总和进行了研究。在某些假设条件下，对结果进行数学处理得出了运动神经元对Ia神经纤维单突触激活的阈值估计值。结果发现，平均而言，约62个兴奋性突触后电位（EPSP）才能使一个运动神经元放电，且一根Ia纤维大约支配139个神经元。
