{HEAD ~ The motor controller} sends out a signal to control an electric motor and turbine to generate {TAIL ~ the desired inspiratory and expiratory pressures} 
{ HEAD ~ The motor controller } sends out a signal to control an electric motor and turbine to generate { TAIL ~ the desired inspiratory and expiratory pressures }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL