Figure 3.
The number of jumps zebrafish performed is significantly increased by all aversive stimuli. Mean ± S.E.M. are shown. Sample sizes (n) are indicated in the text. White bars represent performance during the pre-stimulus (habituation) period, black bars represent the stimulus period performance and grey bars the post-stimulus period performance. The stimulus type employed is indicated above the bar graphs. Note jumping was practically absent in response to the attractive stimuli (the zebrafish images).