Relationship between tidal volume and inspiratory duration in de cerebrated cats

Glebovskii, V.D.; Gizatullina, N.S.

Fiziologicheskii Zhurnal SSSR Imeni I M Sechenova 62(11): 1636-1644


ISSN/ISBN: 0015-329X
Accession: 006299738

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In decerebrated cats, tidal volume (Vt) was increased from apnea to maximal values through rebreathing. In most cases, there was a reverse relationship between Vt and inspiratory duration (Ti). The shape of curves was nearly the same before and after vagotomy. The curves consisted of 3 parts. The relationship between Vt and Ti is primarily determined by the bulbopontine respiratory mechanism. Impulses from pulmonary stretch receptors shift the Vt-Ti relationship curve to the left and down.