Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation

Search Page

Filters

My NCBI Filters

Text availability

Article attribute

Article type

Publication date

Search Results

146 results

Filters applied: . Clear all
Results are displayed in a computed author sort order. The Results By Year timeline is not available.
Page 1
Sleep- and circadian-dependent modulation of REM density.
Khalsa SB, Conroy DA, Duffy JF, Czeisler CA, Dijk DJ. Khalsa SB, et al. Among authors: duffy jf. J Sleep Res. 2002 Mar;11(1):53-9. doi: 10.1046/j.1365-2869.2002.00276.x. J Sleep Res. 2002. PMID: 11869427
Light exposure patterns in healthy older and young adults.
Scheuermaier K, Laffan AM, Duffy JF. Scheuermaier K, et al. Among authors: duffy jf. J Biol Rhythms. 2010 Apr;25(2):113-22. doi: 10.1177/0748730410361916. J Biol Rhythms. 2010. PMID: 20348462 Free PMC article.
146 results