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Figure 2


Fig. 2. Quantifying simultaneous stereotyped sequence of pulse intervals (SPIs) and motor patterns. (A) For each of the 30-min observation periods in the non-breeding conditions, three random consecutive minutes were analyzed. Note that depending on length of courtship bout(s), we analyzed varying lengths of time for each observation session. (B) In the 3-min segment, stereotyped motor and SPI patterns were identified and tallied for each sex. Each vertical bar indicates the starting time of the motor and SPI displays in each sex. Select displays are labeled: H, hovering; S, swimming; L, long cessations; R, regularization; B, slow burst. (C) A 30-s segment of a time (s) versus interval (ms) plot expanded in detail in (D) with SPI and motor patterns identified and bracketed for quantifying purposes. M, medium burst; D, random; C, short cessations.





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