Figure 5.
Temporal evolution of the inter-beat interval and T13 over the course of the LBNP session of subject #9, 24 y. m., In this subject the narrowing of T13 was observed without any change in heart rate until venting.
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.