Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Example of ECG pattern from three different individuals (signals from the same individual are collected from the same recording session and they are closely overlapped): (a) one heartbeat; (b) two heartbeats. Different color lines show about different individuals.
