Figure 5.

Consecutive and periodic appearance of similar spatiotemporal patterns of bursts. (A) Similarity matrix of bursts. Bursts are listed in temporal order. (B) Relationship between similarity and the difference of the burst indices in temporal order. The red line indicates mean similarity against the difference of burst indices in temporal order. The error bars are SD. The thick black line is a linear regression line to the mean similarity. (C) Autocorrelation of the mean similarity that subtracted the regression line shown in (B). (D) Periodogram of the mean similarity that subtracted the regression line. Asterisk indicates a maximum peak. The significance level of the maximum peak was tested using Fisher's g-statistic. (E–G), The same analysis as shown in (B–D), respectively, about relationship between similarity and the difference of burst appearance time.