Triangular heat maps showing correlation between sarcomeres during consecutive cardiac cycles in a mouse with normal systolic function. (A) Diagrams for M1 in Fig. 3 A (and Fig. 1 A). Correlation between average and individual sarcomeres (top row) and between an individual sarcomere and other sarcomeres (second row and below) are shown. (B) Same as in A for M2 in Fig. 3 A. In A and B, CI is displayed on a color scale, as indicated on right (i.e., from 1 [dark blue] to −1 [dark red]), and sarcomere number (i.e., from nos. 1–30 [or average, denoted as Avg.]), as indicated on top and left, of each row. Data on six sequential cardiac cycles are shown.