Differential loss of neuromuscular connections according to activity level and spinal position of neonatal rabbit soleus motor neurons.

@article{Callaway1989DifferentialLO,
  title={Differential loss of neuromuscular connections according to activity level and spinal position of neonatal rabbit soleus motor neurons.},
  author={Edward M. Callaway and James M. Soha and David C Van Essen},
  journal={The Journal of neuroscience : the official journal of the Society for Neuroscience},
  year={1989},
  volume={9 5},
  pages={1806-24}
}
We have tested whether the ability of synapses to compete for occupancy of endplates during neuromuscular synapse elimination is affected by differences in the spinal position or in the activity level of the parent motor neuron. To test the role of spinal position, the relative sizes of motor units for motor neurons from middle and extreme (rostral/caudal) positions in the rabbit soleus motor pool were determined at 3 postnatal ages: 4-5 d ("early" ages, when the soleus is heavily… CONTINUE READING