[The relationship between lung volume and discharges of individual groups of pulmonary stretch receptors].

In 120 lung stretch receptors of the cat, the volume threshold, impulse frequencies in the end of inspiration and in various volumes of inflation or defleation of the lung, were studied. Low-threshold (25%), high-threshold (60%), and intermediate (15%) endings were revealed. Two types of low-threshold and four types of high-threshold receptors were singled out. Nerve fibers from various types of the lung stretch receptors were found to have similar conduction velocities.