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.
Distribution of sleep stages over sleep period time (SPT) in amnestic, atypical Alzheimer’s Disease and controls. Fig. 1 Shows the amount of each sleep stage (percentages, %) across groups. Note that the percentage of N3 is reduced in amnestics and REM sleep is reduced in atypical Alzheimer’s Disease. WASO and N1 are increased in Alzheimer’s Disease groups.
