Figure 5

Continuous pressure signal from Raumedic sensors before/after electrostatic discharge. The continuous pressure signals retrieved from Raumedic NeuroVent sensors are shown before and after electrostatic discharges (ESD's) for SensorID 14 (NeuroVent P-C; a), and for SensorID 33 (NeuroVent P; b). The baseline pressure level (mmHg) is indicated on the y axis, and the time line on the × axis levels; the ESD is indicated by an arrow. Note that gradual drifts in baseline pressure occurred. For SensorID 33, repeated low ESD's of 0.5 kV (not being sensed by the test person) causes gradual build-up of baseline pressures.