Northwestern University Center for Circadian and Sleep Medicine

10/14/2025

Do you have trouble falling asleep or often sleep late? If so, you may be eligible to join our study on Delayed Sleep-Wake Phase Disorder. Click below to see if you qualify!

Title of Research Study: Physiological and Behavioral Basis of Circadian Rhythm Delayed Sleep-Wake Phase DisorderIRB Study Number: STU00221304Investigator: Phyllis C. Zee, MD, PhDSupported By: This research is supported by National Institutes of HealthKey Information about this research study:

10/02/2025

Join our study on Circadian Rhythms and Delayed Sleep-Wake Phase Disorder!

09/10/2025

Join our study on sleep and daytime sleepiness after COVID!

08/06/2025

Join our study on sleep and daytime sleepiness after COVID.

04/28/2025

We are seeking individuals 55 and over who are good sleepers for our research study.

Thank you for your interest in the study. Please review the brief study description below and complete the questionnaires by clicking next if you are interested in participating.

03/11/2025

Join our study on Circadian Rhythms and Delayed Sleep-Wake Phase Disorder.

09/09/2024

Join our new study on Circadian Rhythms and Delayed Sleep-Wake Phase Disorder.

08/29/2024

Join our new study on insomnia.

Thank you for your interest in the study. Please review the brief study description below and complete the questionnaires by clicking next if you are interested in participating.

08/13/2024

Join a new study for those who have lost a spouse/partner in the past 3 months.

https://redcap.nubic.northwestern.edu/redcap/surveys/?s=9A77E7JLC4R38P4X

08/13/2024

CCSM Director, Dr. Phyllis Zee was on a recent segment with WGN Radio's Dean Phillips discussing ways to improve your sleep.

Dr. Phyllis Zee, Chief of Sleep Medicine at Northwestern Memorial Hospital, joins Dean for this week’s health update. Dr. Zee shares why it is important to get good sleep and tips on how to achieve…