Phenotypic specification of hindbrain rhombomeres and the origins of rhythmic circuits in vertebrates, A.H. Bass and R. Baker; the generation and subtraction of sensory expectations within cerebellum-like structures, C. Bell et al; a quantitative analysis of passive electrolocation behaviours in electric fish, C.D. Hopkins et al; biogenic amines and aggression - experimental approaches in crustaceans, R. Huber et al; neural mechanisms of behavioural plasticity metamorphosis and learning in "Manduca sexta", J.C. Weeks et al; in celebration of the life of Walter F. Heiligenberg, T.H. Bullock; chronology of Walter F. Heiligenberg; publications from the laboratory of Walter F. Heiligenberg.