Summary
The posterior lateral-line lobe, contrary to present belief, projects bilaterally to the torus semicircularis, although the contralateral projection is considerably more extensive. The torus also receives bilateral inputs from the medial octavo-lateralis nuclear complex, the reticular formation, a sublemniscal nucleus, and the nucleus prae-eminentialis. Unilateral inputs to the torus were found originating from the ipsilateral mesencephalic tectum and the contralateral lobus caudalis of the cerebellum. Extensive commissural systems between the right and left torus are also described for the first time.
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Ebbesson SOE, Hansel M, Scheich H (1981) An “on the slide” modification of the DeOlmos-Heimer HRP method. Neurosci Lett in press
DeOlmos JS (1977) An improved HRP method for the study of central nervous connections. Exp Brain Res 29:541–551
Heiligenberg W, Bastian J (1980) The control of Eigenmannia's pacemaker by distributed evaluation of electroreceptive afferences. J Comp Physiol 136:113–133
Knudsen EI (1977) Distinct auditory and lateral line nuclei in the midbrain of catfishes. J Comp Neurol 173:417–432
Maler L, Finger T, Karten HJ (1974) Differential projections of ordinary lateral line and electroreceptors in the gymnotid fish, Apteronotus (Sternarchus) albifrons. J Comp Neurol 158:363–382
Scheich H (1974) Neural analysis of wave form in the time domain: midbrain units in electric fish during social behavior. Science 185:365–367
Scheich H (1977) Neural basis of communication in the high frequency electric fish, Eigenmannia virescens (Jamming Avoidance Response) I, II, III. J Comp Physiol 113:181–255
Scheich H, Bullock TH (1974) The role of electroreceptors in the animals' life. II. The detection of electric fields from electric organs. In: Fessard A (ed) Handbook of sensory physiology Vol III/3. Springer, Berlin Heidelberg New York, pp 200–256
Scheich H, Maler L (1976) Laminar organization of the torus semicircularis related to the input from two types of electroreceptors. In: Creutzfeldt O (ed) 7th International Neurobiology Meeting (Göttingen) on: Afferent and intrinsic organization of laminated structures in the brain. Exp Brain Res Suppl 1. Springer, Berlin Heidelberg New York, pp 565–567
Szabo T (1967) Activity of peripheral and central neurons involved in electroreception. In: Cahn PH (ed) Lateral line detectors. Indiana University Press, Bloomington London, pp 278–294
Szábo T, Sakata H, Ravaille M (1975) An electrotonically coupled pathway in the central nervous system of some teleost fish, Gymnotidae and Mormyridae. Brain Res 95:459–474
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Scheich, H., Ebbesson, S.O.E. Inputs to the torus semicircularis in the electric fish Eigenmannia virescens . Cell Tissue Res. 215, 531–536 (1981). https://doi.org/10.1007/BF00233529
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DOI: https://doi.org/10.1007/BF00233529