Figure 1.

Synchronization of bursting activities of neurosecretory cells with calling behavior of a virgin female of B. mori. (A) Firing of the cells. Five classes of action potentials are numbered 1–5 and timing of each potential is shown by a vertical line above the waveform trace. (B) Abdominal movement. Time 0 = 13 h:30 min:21 s. (C) Relationship between the firing activities of neurosecretory cells and the amplitude of abdominal movement. Number of spikes consisting of each burst was plotted against maximal position of the abdomen at the motion corresponding to the burst. The regression line represents y = 22.177x − 6.859 (n = 205). r, Correlation coefficient. [Calibration bars = 0.2 mV (A) and 2 mm (B).]