Widespread mechanosensory activation of the serotonergic system of the medicinal leech.

@article{Szczupak1995WidespreadMA,
  title={Widespread mechanosensory activation of the serotonergic system of the medicinal leech.},
  author={Lidia Szczupak and William B. Kristan},
  journal={Journal of neurophysiology},
  year={1995},
  volume={74 6},
  pages={
          2614-24
        }
}
The serotonergic system of the medicinal leech comprises a small number of iterated, identified neurons, of which the Retzius (Rz) neurons are major components. Activity in pressure mechanosensory (P) cells sufficient to elicit locomotory and defensive behaviors also excites Rz neurons. We characterized the interactions between P and Rz neurons within the ganglion and at different distances along the nerve cord. 2. Within a ganglion 1) P cells excited both Rz neurons, electrically close to the… CONTINUE READING
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