The diagram shows the projection of the time-coding knollenorgan electroreceptor into the central nervous system. The pathways were determined using tract-tracing techniques of fluorescent dye injection, and HRP (Enger et al, 1976; Bell et al, 1981). Three areas are represented in this graph: the electroreceptor periphery, the hindbrain nucleus, nELL, and the midbrain, ELa and ELp.
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Abbreviations: ELa: midbrain exterolateralis nucleus pars anterior. ELp: midbrain exterolateralis nucleus pars posterior. MV: midbrain nucleus medialis ventralis nELL: nucleus of the Electrosensory Lateral Line Lobe (hindbrain).
From Friedman & Hopkins (in press) |
Bell, C. C., Finger, T. E. and Russell, C. J. (1981). Central connections of the posterior lateral line lobe in mormyrid fish. Experimental Brain Research 42, 9-22.
Enger, P. S., Libouban, S. and Szabo, T. (1976). Fast conducting electrosensory pathway in the mormyrid fish, Gnathonemus petersii. Neurosci. Lett. 2, 133-136.
Friedman, M. A. and Hopkins, C. D. (in press). Neural substrates for species recognition in the time-coding electrosensory patheway of mormyrid electric fish. J. Neuroscience .
Mugnaini, E. and Maler, L. (1987). Cytology and immunocytochemistry of the nucleus exterolateralis anterior of the mormyrid brain: possible role of GABAergic synapses in temporal analysis. Anat. Embryol. 176, 313-336.