Early cycle and early cycle leading to double trigger

The first image shows an upward deformation of the early portion of expiratory flow-time scalar (decreased expiratory flow) becuase of continuation of neural inspiration afte the end of mechanical inflation-early cycling There are two breaths separated by a small gap (incomplete expiration) which is known as double trigger. Early cycle can lead to double trigger if neural inspiration continues beyond mechanical inspiratory phase and reaches the trigger sensitivity threshold.