Fig. 6. Effects of surgery on behaviours elicited by touching the posterior. (A) Behaviours elicited in the three experimental groups by posterior stimulation. Locomotory behaviours (indicated by ^*) were the most common behaviours elicited by posterior touch. Control, N=22; nerve cuts, N=9; neuromeres ablated, N=10. (B) CCA1 behaviour scores. (C) Individual CCA1 scores of leeches in each experimental group. The distribution of scores for `control' leeches and `ablated' leeches are farthest apart, and the distribution of scores for `cut' leeches lies between the other two. See Table 1 for a description of the behaviours.