Figure 2

Open-field tests. (a) Thigmotaxis measured as time spent close to the edges of the arena, divided in 1-min bins; (b) activity measured as distance moved, divided in 1-min bins; (c) activity measured as time spent moving, divided in 1-min bins; (d) activity measured as distance moved in the medaka tested with the extended testing time (4 h), divided in 30-min bins to allow comparison between standard testing time (30 min) and extended testing time; (e) activity measured as time spent moving in the medaka tested with the extended testing time (4 h), divided in 30-min bins to allow comparison between standard testing time (30 min) and extended testing time. Data points and error bars represent means and standard errors, respectively.