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.
Hypnograms for all transitions into REM sleep. Shown are the hypnograms for all transitions into REM sleep from all rats numbered 1–12, inclusive of REM sleep episodes and the preceding 90 s. All transitions are aligned according to the epoch where the transition into REM sleep takes place (denoted as time 0).
