Fig. 5

Spontaneous alternation behaviour in Wistar, Goto-Kakizaki, Zucker lean and Zucker fa/fa rats. The spontaneous alternation behaviour in the Y-maze test in Wistar and Goto-Kakizaki (a) and Zucker lean and fa/fa (b) rats at 8, 16, and 24 weeks of age. Non-diabetic rats (white bars), diabetic rats (black bars). The data are presented as the mean % of alternation behaviour ± SEM of at least 11 animals. *p < 0.05 compared to the control group