Differential projections of ordinary lateral line receptors and electroreceptors in the gymnotid fish, Apteronotus (Sternarchus) albifrons

The gymnotid acousticolateral area contains both anterior and posterior lobes. The posterior lobe is closely associated with the lobus caudalis of the cerebellum. Ordinary lateral line receptors are represented in the anterior lobe, while electroreceptors are represented in the posterior lobe. As is the case in mormyrids, there is an extensive projection of parallel fibers from the lobus caudalis of gymnotids to the dorsal portion of the posterior lobe molecular layer. There is very little information on input to the lobus caudalis; one possible input is from the anterior lobe.