This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Request Permissions Citing Articles Citing Articles via Google Scholar Google Scholar Articles by PETERSON, L. H. Search for Related Content PubMed PubMed Citation Articles by PETERSON, L. H.

(Circulation. 1950;2:351.)
© 1950 American Heart Association, Inc.

---

Some Characteristics of Certain Reflexes Which Modify the Circulation in Man

LYSLE H. PETERSON M.D.¹

¹ From the Department of Physiology, the Harrison Department of Surgical Research, University of Pennsylvania School of Medicine, and the Department of Anesthesiology of the Hospital of the University of Pennsylvania, Philadelphia, Pa.

Records are presented which have been obtained from man by direct intra-arterial catheterization and electrocardiography. These records have been selected (1) because they offer evidence for the validity of Starling's law in intact man and (2) because they demonstrate that when the heart is influenced by activity of the so-called "intrinsic" reflexes these manifestations of Starling's law are modified. It appears from these types of data that ventricular activity may be directly affected independently of influences upon the pacemakers of the heart.