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.
Experimental Design. (A) Protocol of the experiment with the duration of each stage (57 h, Self-selected Light/dark cycle; 107 h, Constant Dim Light; and 52 h, Light/dark cycle with early wake up), (B) variables measured continuously throughout the experiment, (C) diagram of tests performed and the seven approximate times (blue arrows) within each waking period.
