Reentrant wave terminated by rapid pacing.
A) One complete rotation of the reentrant wave presented as an activation map, where color indicates the time of activation at each pixel. B) Fluorescence snapshot of the wave with an arrow denoting direction of rotation. Normalized Fluo-4 fluorescence is shown in pseudo color. The red dot indicates the position of the spiral tip. C) Sequence of frames illustrating the interaction of one paced wavefront with the tip of the spiral wave before (top row) and after (bottom row) the collision. Formation of a wavebreak can be seen in the last two frames. Site of collision is denoted by asterisks. Wavefronts are indicated by solid lines, wavebacks by dotted lines. The red dot indicates the position of the spiral tip. Details in Agladze et al, AJP 2007.
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