The reflex effects of intralaryngeal carbon dioxide on the pattern of breathing.

1. The reflex effects on the pattern of breathing and total lung resistance of introducing 30, 10 and 5% CO(2) in air into the larynx have been studied in anaesthetized and decerebrate cats breathing through a tracheostomy tube.2.

Reflex effects of laryngeal irritation on the pattern of breathing and total lung resistance.

1. The reflex responses to chemical and mechanical irritation of the laryngeal mucosa have been studied by applying stimuli to the open larynx of tracheostomized cats while monitoring ventilatory and circulatory variables. The responses were studied before and after vagotomy and before and after denervation of the larynx by transection of the superior and recurrent laryngeal nerves.