Click on image to view larger version.

Figure 3 Conversion from "flutter-like" to "fibrillation-like" activity by increasing the concentration of ACh (2.5 µmol/l) (data from tissue no. 10). (A to G) The re-entrant wave front became nonstationary. (G) The daughter wave front (asterisk) arising from the wave break spontaneously detached from the anchoring site and propagated outside the mapped area. (H) The path and direction of the tip of the re-entrant wave front (white lines). (I) The simultaneous pseudo-ECG shows fibrillation-like activity. The double bars in parts G and H indicate the site of spontaneous wave break.