Graphs showing approach (top) or avoidance (bottom) probability for small visual stimuli in 7 dpf unfed pcp4a+/+ and pcp4amd78/md78 larvae. Approach and avoidance probabilities were calculated as (approaches/[approaches + avoidances + neutral interactions]) or (avoidances/[approaches + avoidances + neutral interactions]), respectively. For approach probability, p = 0.7 (1), p = 0.9 (3), and p = 1.0 (5). For avoidance probability, p = 0.02 (1), p = 0.2 (3), and p = 0.04 (5).
