Abstract
AbstractImpulse discharges in vagal afferents via the laryngeal communicans and related to respiration have been recorded in Sprague‐Dawley rats. Particular interest has been devoted to 2 types of discharges, one appearing on deflation of the lungs and the other on active inspiration. The former is occasionally seen during ordinary expiration, but especially on application of pressure on the thorax, suction of air through trachea, insufflation of air into the pleural cavity, and on collapse of the lungs by exclusion of artificial breathing with open thorax. On suction of air and light compression of the thorax impulses may appear, after an initial burst, on each expiration.The discharges during the inspiratory phase appear independently of inflation of the lungs. They are very evident during gasps and auxiliary breathing. Discharges on inflation of the lungs have only occasionally been recorded.
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