Fig. 3. Antennal and head movements during pausing (A) and walking (B) in a searching cockroach. These two examples were obtained from the same animal. In pausing, large deflections were frequently observed in traces of the antennal horizontal components and the yaw and pitch components of the head (see shaded area). Antennal vertical arcs were lowered entirely in the walking state. Deflections in the head roll were relatively small in both behavioral states. Vertical calibration bars show angular positions for antennae and head. L, left; R, right.