RT Book, Section A1 Zimmerman, Franklin H. SR Print(0) ID 1200099827 T1 From Electrophysiology to Electrocardiography T2 ECG Core Curriculum YR 2023 FD 2023 PB McGraw Hill Education PP New York, NY SN 9780071785211 LK accesscardiology.mhmedical.com/content.aspx?aid=1200099827 RD 2024/09/15 AB In Chapter 3 we discussed the electrophysiology of a single cell. We learned how an individual cardiomyocyte becomes polarized, depolarized, and repolarized. Now let’s see how those electrical events apply to multiple cells, complete muscle fibers, and the entire myocardium. The graphical representation of this process is what we have come to know as the electrocardiogram (ECG).