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.
Overnight changes in the amplitude of delta waves in REM sleep for the sawtooth frequency range (125–250 ms) and the medial-occipital wave range (300–500 ms). A diffuse decrease in amplitude was observed for both frequency ranges. White dots mark significant effects at the group level (p < 0.05, corrected).
