Fig. 6. Trajectories of both antennae and head. Data in cases 1–3 were obtained from three different animals. The sampling period for each graph was 15 s. The right and left antennal trajectories are indicated, respectively, by red and blue traces, and the head by green traces. (1) The random pattern was most commonly observed in both pausing (A) and walking (B). (2) The loop-like pattern was apparent only during walking. Insets in the right panel show typical examples of the three basic patterns forming the loop-like trajectory. These were derived from a trajectory of the left antenna. L, loop; A, arch; V, vertical line. (3) The `consistent' loop-like pattern independent of the searching mode.