Fig 2.

Percent of time spent by zebrafish in the bottom (left most graph), middle (middle graph) and in the top (right most graph) layer of the experimental tank. Mean ± S.E.M. are shown. The data are expressed for three intervals separately, the pre-stimulus period (the first interval during which no stimulus was shown), the stimulus period (during which the moving black bird silhouette was presented multiple times), and the post-stimulus period (during which no stimulus was presented). The shading of the bars corresponds to the alcohol dose used with darker shades indicating higher concentrations (see legends). For details of the results of statistical analyses see Results.