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Fig. 5. Smoothed escape trajectories obtained as described in
Fig. 2, but from juvenile roach
having the lateral line system blocked by 0.1 mmol l1
Co2+. Eliminating the sensory function of the lateral line organs
did not significantly change the response patterns. Response trajectories were
still mainly in the direction of the initial acceleration, and 25 of the 26
observed startle responses occurred in the compression (trailing) half of the
test chamber. For comparison, the trajectories of fish in normal freshwater,
as shown in Fig. 2, are
included as dotted lines.