Basic usageThe interactive operation of ECGSIM is almost entirely mouse controlled. The main mouse operations are : dragging, i.e. moving the mouse while holding the mouse button down, and clicking of either the left- or the right mouse button. The ECGSIM main window consists of four panes: the heart pane, the thorax pane, the TMP pane and the leads pane. The boundaries between the panes may be shifted by dragging the left mouse button . For each pane there is a menu item on the menu bar. The options in each menu control what is displayed in the corresponding pane. The most frequently used functions are also available from the tool buttons at the top of each pane. To view the function of each button, rest the mouse cursor on the button without pressing any of the mouse buttons. A short text explaining the function of the button will appear. The heart and the thorax may be rotated by left mouse button dragging or by rotating the mouse wheel. The default, AP view (natural frontal view), is restored by a double click of the left mouse button.
By clicking with the left mouse button on the heart surface
in the heart pane the nearest node on the heart surface is
selected. The TMP pane shows the
transmembrane potential at this node. By means of the handlers
( The effect of these changes on the body surface potentials may be viewed in the leads pane and the thorax pane. The status bar at the bottom of ECGSIM shows properties of the selected node. |
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in this pane, the parameters of the TMP: depolarization, duration, resting potential, source
amplitude and slopes at that node and the region around it can be changed.
The resulting changes are visible in the heart pane if the
corresponding surface function is selected.