Disruption of respiratory-ventilator entrainment by unilateral stimulation at the dorsolateral pons (pontine stim.) in (a) a paralyzed, and (b) an unparalyzed animal both with intact vagi.

<p>Conventions as in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0000865#pone-0000865-g001" target="_blank">Fig. 1</a>. The response in the unparalyzed animal was more variable but the overall effects were similar to those of the paralyzed animal. (c) Absence of respiratory-ventilator entrainment before, during or after pontine stimulation in the same animal shown in (a) after vagotomy.