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Figure 3 Midwall circumferential strain as a function of time in a high papillary cross-section of one experiment. The "tracings" are displayed according to the anatomy of the LV, as if the LV was cut open along the mid septum. Only every other material point is shown (12 out of the 24 in circumferential direction; see Methods). The approximate pacing site is indicated by an asterisk, and was actually 2 cm below this cross-section during RVapex pacing and slightly above it during LVbase pacing. Zero strain is the length at the time of placing the taglines (time = 0 ms). The ejection phase is indicated by the broken lines.
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