HRP labeling and ultrastructural localization of prepacemaker terminals within the medullary pacemaker nucleus of the weakly electric gymnotiform fish Apteronotus leptorhynchus.
The prepacemaker nucleus (PPN) in the midbrain of gymnotiform electric fish projects to the pacemaker nucleus (PN) in the medulla and modulates its rhythmic discharges in the context of social electric communication. Anterograde labeling of PPN axons with HRP and ultrastructural studies of their terminations in the PN have shown that PPN neurons form synaptic contacts with both types of neurons in the PN, pacemaker cells, and relay cells.
Szabo
T
T
Département de Neurophysiologie Sensorielle, Laboratoire de Physiologie Nerveuse, CNRS, Gif sur Yvette, France.
Heiligenberg
W
W
Ravaille-Veron
M
M
D000818:Animals; D004555:Electric Fish / Q000033:anatomy & histology* / Q000502:physiology; D006735:Horseradish Peroxidase; D008526:Medulla Oblongata / Q000166:cytology / Q000502:physiology / Q000648:ultrastructure*; D008636:Mesencephalon / Q000166:cytology / Q000502:physiology / Q000648:ultrastructure*; D008854:Microscopy, Electron; D010507:Periodicity
D006735:Horseradish Peroxidase