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.


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


My NCBI Filters

Results by year

Table representation of search results timeline featuring number of search results per year.

Year Number of Results
2002 1
2004 2
2005 2
2006 2
2007 1
2009 3
2010 3
2011 4
2012 4
2013 3
2014 3
2015 5
2016 5
2017 9
2018 8
2019 5
2020 7
2021 7
2022 5
2023 1

Text availability

Article attribute

Article type

Publication date

Search Results

63 results

Results by year

Filters applied: . Clear all
Page 1
Hypocretin/orexin in arousal and stress.
Berridge CW, España RA, Vittoz NM. Berridge CW, et al. Among authors: espana ra. Brain Res. 2010 Feb 16;1314:91-102. doi: 10.1016/j.brainres.2009.09.019. Epub 2009 Sep 11. Brain Res. 2010. PMID: 19748490 Free PMC article. Review.
Noradrenergic modulation of wakefulness/arousal.
Berridge CW, Schmeichel BE, España RA. Berridge CW, et al. Among authors: espana ra. Sleep Med Rev. 2012 Apr;16(2):187-97. doi: 10.1016/j.smrv.2011.12.003. Epub 2012 Jan 31. Sleep Med Rev. 2012. PMID: 22296742 Free PMC article. Review.
Pharmacological Characterization of 4-Methylthioamphetamine Derivatives.
Guajardo FG, Velásquez VB, Raby D, Núñez-Vivanco G, Iturriaga-Vásquez P, España RA, Reyes-Parada M, Sotomayor-Zárate R. Guajardo FG, et al. Among authors: espana ra. Molecules. 2020 Nov 13;25(22):5310. doi: 10.3390/molecules25225310. Molecules. 2020. PMID: 33203055 Free PMC article.
Sleep neurobiology from a clinical perspective.
España RA, Scammell TE. España RA, et al. Sleep. 2011 Jul 1;34(7):845-58. doi: 10.5665/SLEEP.1112. Sleep. 2011. PMID: 21731134 Free PMC article. Review.
Striatal low-threshold spiking interneurons locally gate dopamine.
Holly EN, Davatolhagh MF, España RA, Fuccillo MV. Holly EN, et al. Among authors: espana ra. Curr Biol. 2021 Sep 27;31(18):4139-4147.e6. doi: 10.1016/j.cub.2021.06.081. Epub 2021 Jul 23. Curr Biol. 2021. PMID: 34302742 Free PMC article.
63 results