PHYSIOLOGY Correction for “Constitutive BDNF/TrkB signaling is required for normal cardiac contraction and relaxation,” by Ning Feng, Sabine Huke, Guangshuo Zhu, Carlo G. Tocchetti, Sa Shi, Takeshi Aiba, Nina Kaludercic, Donald B. Hoover, Sarah E. Beck, Joseph L. Mankowski, Gordon F. Tomaselli, Donald M. Bers, David A. Kass, and Nazareno Paolocci, which appeared in issue 6, February 10, 2015, of Proc Natl Acad Sci USA (112:1880–1885; first published January 12, 2015; 10.1073/pnas.1417949112).

The authors note that the affiliation for Carlo G. Tocchetti should instead appear as Department of Translational Medical Sciences, Federico II University, 80131 Naples, Italy. The corrected author and affiliation lines appear below. The online version has been corrected.

Ning Feng^a, Sabine Huke^b, Guangshuo Zhu^a, Carlo G. Tocchetti^c, Sa Shi^a, Takeshi Aiba^d, Nina Kaludercic^e, Donald B. Hoover^f, Sarah E. Beck^g, Joseph L. Mankowski^g, Gordon F. Tomaselli^a, Donald M. Bers^h, David A. Kass^a, and Nazareno Paolocci^a,i,1

^aDivision of Cardiology, Johns Hopkins Medical Institutions, Baltimore, MD 21205; ^bDivision of Clinical Pharmacology, Vanderbilt University School of Medicine, Nashville, TN 37232; ^cDepartment of Translational Medical Sciences, Federico II University, 80131 Naples, Italy; ^dDivision of Arrhythmia and Electrophysiology, National Cerebral and Cardiovascular Center, Osaka 565-8565, Japan; ^eNeuroscience Institute, National Research Council of Italy, 35131 Padova, Italy; ^fDepartment of Biomedical Science, East Tennessee State University, Johnson City, TN 37614; ^gDepartment of Molecular and Comparative Pathobiology, Johns Hopkins Medical Institutions, Baltimore, MD 21205; ^hDepartment of Pharmacology, University of California, Davis, CA 95616; and ⁱDipartimento di Medicina Clinica e Sperimentale, Università di Perugia, 06132 Perugia, Italy