Fig. 2

The rate of spfps correlates with the position of the slice along the ventral but not the dorsal hippocampus. a Example recordings illustrating that slices taken from more extreme locations in the VH but not the DH displayed higher rates of spfps. The number on the left of each trace indicates the position of the slice along the dorsoventral axis of the hippocampus. b Cumulative graph showing that the rate of spfps was linearly correlated with the distance of the slice from the ventral but not the dorsal end of the hippocampus. The numbers in abscissa correspond to the successive locations along the dorsoventral axis of the structure that slices were taken from. Thus, about twenty positions for 500–550 μm thick slices can be allocated along the entire rat hippocampus which is 10–11 mm long. The medial part of the hippocampus (i.e. locations 9–12) is not shown for clarity reasons. Data were obtained from all SR 95531 concentrations. Only slices that displayed spfps were included in the analysis. The ANOVA test showed that the rate of spfps differed along the VH (F = 6.29, p < 0.001) but not along the DH