[Relationship between respiratory volume and duration of inspiration in decerebrate cats].

In decerebrated cats, tidal volume (Vt) was increased from apnoea to maximal values in result of rebreathing. In most cases there was a reversed relationship between Vt and inspiratory duration (Ti). The shape of curves was nearly the same before and after vagotomy. The curves consisted of three parts. The relationship between Vt and Ti is primarily determined by bulbopontine respiratory mechanism. Impulses from pulmonary stretch receptors shift Vt--Ti relationship curve to the left and down.