Sleep and Chronobiology Laboratory

Administrative Research Center (ARC), Room A29

3100 Marine Street
Boulder, CO 80309-0554
phone: 303-735-1923
fax: 303-735-2864

Research Interests

  • Health and safety consequences of sleep and circadian disruption.

  • Influence of sleep and circadian rhythms on human physiology (neuroendocrine, metabolic and immune function) and behavior (sleepiness, memory, learning, mood, cognitive and motor performance) with application to public health and safety.

  • Countermeasures to improve sleep and wakefulness.


  • Director: Kenneth P. Wright Jr., Ph.D.
  • Postdoctoral Fellow: Christopher Depner, Ph.D.
  • Graduate Students: Tommy M. Moehlman, Hannah Ritchie, B.S., Ellen B. Stothard, B.S.
  • Undergraduate Students: Jillian Arja, Molly Guerin, Lauren Johnson, Suzi Knowles, Anna Mitchell, Nikhil Sahai, Steven Sares, Kate Taylor, David Wilhelm.
  • Professional Research Assistants: Brian R. Birks, B.A., Zach Bohn, Brad Brainard, B.A., Jake Guzzetti, B.A., Maryam Nuriyeva, M.D., Nabeel Sawaged, M.D., Gayle Wright, MSW, LCSW.
  • Collaborators: Richard R. Bootzin, Ph.D., University of Arizona; Charles A. Czeisler, Ph.D., M.D., Harvard Medical School, Brigham and Women's Hospital; Robert H. Eckel, M.D., University of Colorado Anschutz Medical Campus; Leigh Perreault, M.D., University of Colorado Anschutz Medical Campus; Edward Melanson, Ph.D., University of Colorado Anschutz Medical Campus; John O'Neill, Ph.D. Cambridge University; Phyllis Zee, M.D., Ph.D., Northwestern University.

Current Research Projects

  • Influence of sleep loss, sleep inertia and circadian disruption on cognitive function.

  • Countermeasures to improve sleep and wakefulness.

  • Physiological and behavioral mechanisms by which insufficient sleep contributes to obesity and diabetes.

  • Physiological mechanisms by which circadian misalignment contributes to metabolic dysregulation.

  • Early morning shift work and sleep disturbance.

  • Resetting the human circadian clock with photic and non-photic stimuli.

Persons interested in volunteering to participate in one of these studies should visit the sleep study participant page.

Colorado Sleep and Circadian Research Symposium, June 2015

Opportunities for Undergraduate Students

  • The requirements for undergraduate students who want a research experience in our Laboratory are:
    • A strong desire to obtain research experiences prior to graduate school, medical school, or advanced study in a health-related field
    • Minimum commitment: One year
    • Minimum hours/week when testing subjects: 10 hours (includes journal club)
    • Minimum experience: No prior experience required
    • Must be willing to work with a team
    • Must be able to work various hours during the day, at night, and on weekends.

  • UROP, independent study, honors thesis, and concurrent BA-MS opportunities are available.

  • For more information, contact Prof. Ken Wright (


Camping Syncs Internal Clock with Nature (Entrainment of the Human Circadian Clock to the Natural Light-Dark Cycle). Production and Editing: Brandon R. Griffin.

Recent Publications