Fig.7. (A) Recordings of lung pressure PL and raw electroneurograms from the trigeminal (V_m) and vagus (X_l) nerves during an inflation breath (frog deflated to approximately 0cmH₂O) and a deflation breath (frog inflated to 5cmH₂O with air). Vertical bars indicate initiation of X_l discharge. (B) The onset of discharge (burst) activity in the vagus nerve relative to the onset of discharge (burst) activity in the trigeminal nerve during inflation, balanced and deflation breath cycles (*P<0.05 relative to 0). Values are means ± S.E.M. (N=6).