Segmental specialization of neuronal connectivity in the leech

@article{Wittenberg1990SegmentalSO,
  title={Segmental specialization of neuronal connectivity in the leech},
  author={George Wittenberg and Curtis M. Loer and Shelley A. Adamo and William B. Kristan},
  journal={Journal of Comparative Physiology A},
  year={1990},
  volume={167},
  pages={453-459}
}
1. Every segmental ganglion of the leech Hirudo medicinalis contains two serotonergic Retzius cells. However, Retzius cells in the two segmental ganglia associated with reproductive function are morphologically distinct from Retzius cells elsewhere. This suggested that these Retzius cells might be physiologically distinct as well. 2. The degree of electrical coupling between Retzius cells distinguishes the reproductive Retzius cells; all Retzius cells are coupled in a non-rectifying manner, but… CONTINUE READING
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