Figure 4

High-resolution maps. The propagation of the marked waves along the matrix of the electrodes can be displayed using high-resolution maps; (a) shows the isochronal activation time maps for waves 7, 8 and 9. (b) and (c) illustrate examples of velocity and amplitude maps for wave 8. The user can select which wave number to view on each plot in (a) using the list boxes associated with each plot on the left hand side of figure (a). The color scheme for the velocity maps in (b) show the magnitude of the velocity while the arrows show the direction of the velocity along the electrode matrix. The displayed maps can be exported to high-resolution image files (b and c are samples of the exported files) for publication or presentation purposes using the ‘Save data to image file’ buttons shown on the left hand side of figure (a). The numeric values associated with the maps can be exported to text files for further statistical analysis using the ‘Save data to text file’ buttons shown on the left hand side of figure (a).