Fig. 9. Cross-correlations between right (R) and left (L) antennal movements during pausing. (A) Trajectories of both antennae show typical random patterns (sampling period 18 s). (B) Cross-correlation for horizontal components. The waves indicate the time courses of the right and left horizontal deflections for a period of 42 s. Note that polarities for the horizontal position are opposite between the right and left antennae (refer to calibration bars). RH, horizontal deflection of the right antenna; LH, horizontal deflection of the left antenna. Correlation coefficients (r) in the correlation map were calculated by reference to the left antenna. Significant positive correlations (r>0.25) are indicated by yellow to red, and the negative ones (r<–0.25) by blue to black. Significant negative correlations were observed as broad blue or black spots. Backgrounds filled by gray color represent the areas where r values were not statistically significant (|r|<0.25). (C) Cross-correlation for vertical components. Significant correlations were few on the map. RV, vertical deflection of the right antenna; LV, vertical deflection of the left antenna.