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Fig. 5. Effects of surgery on behaviours elicited by touching the midbody. (A)
Behaviours elicited in the three experimental groups by midbody stimulation.
Local bending was the most common response in all three groups. 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 distributions of scores for `control' leeches and for
`ablated' leeches are farthest apart; the distribution of scores for `cut'
leeches lies between the other two. See
Table 1 for a description of
the behaviours.
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