Figure 5.

Real-time sensor waveform test during implantation. The respiration and stimulation are shown in the graph. During breathing, a change in pressure is detected by the sensor. This information is sent to the implantable pulse generator. Stimulation (green line at bottom) is triggered (blue vertical line) and should last until expiration is detected (orange vertical line). In order to prevent stimulation immediately after exhalation, the off period begins (dark gray line at bottom). After the off period, a new stimulation can be triggered. When this does not occur immediately, there is a period without stimulation (light gray line at bottom).