System Manual

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Once a session is initiated, you may trigger stimulation, implementing the programmed IPG
therapy parameters. To stimulate, use the mouse and cursor to select the Stimulate button or
press the push button.
When the stimulation has been triggered, the Status window displays “Stimulating” for the
length of the stimulation period (see Figure 5.7). Meanwhile, the Stimulate button is disabled for
double the time of the stimulation train duration (to allow for a 50% duty cycle). Stimulation can
occur only as often as twice the stimulation train duration; no duty cycle over 50% is allowed by
the software. For example, if a 0.5 second train duration is given, you cannot activate another
stimulation for at least 0.5 seconds after the train duration ends.
Figure 5.7: Stimulate Selected—Status “Stimulating”
The message “Refractory” appears in the Status window for a length of time equal to the
programmed stimulation train duration immediately following the “Stimulating” message (see
Figure 5.8).
Figure 5.8: Status “Refractory”—No Stimulation Allowed
The value in the Stimulation Counter window increases by one for every stimulation delivered.
This counter resets to 0 when the current task is ended and a new task started (see Figure 5.9).
Figure 5.9: Stimulation Counter
Once the stimulation ends and the refractory period has finished, the message in the Status
window returns to “Ready to Stimulate”, the Stimulate button is once again selectable, and a
new repetition of the task can be initiated and stimulated (see Figure 5.6).
The user may then continue to deliver stimulation except during the stimulation refractory
period.