The present invention concerns a method for nasal ventilation and relevant apparatus, particularly for flow-synchronized neonatal assisted ventilation, wherein f(t)is a signal proportional to the ventilation flow, comprising the following steps: (a) inspiration, having a time length ti , during which air is introduced at an inspiration pressure (b) expiration, having a time length te, during which the introduction of air is interrupted (c) return to step(a) characterised in that it comprises a flow threshold Ftr, and in that during said expiration step (b) the following steps are provided (b1) a waiting step having a time length g before the activation of the computation the leakages and (b2) a step of computation of the leakages, having a time length d , so that g+d =Te, wherein if a normalized signal F(t), obtained by a processing by means of an algorithm of the surveyed signal F(t), exceeds the threshold Ftr, a spontaneous respiration activity is detected and the inspiration step (a) is reactivated.
