Sleep Participants

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

Participate in a Sleep Study

The Sleep and Chronobiology Lab is currently recruiting participants forÌýthree research studies. Please click on the links below to read the details of the studies and to access the online screening surveys. Each survey takes 10-15 minutes to complete and will ask basic questions about your medical and sleep history. ÌýPlease note that all your information is kept confidential. Once you complete the online screening form, we will contact you within a week to inform you of your status.​ EmailÌýsleep.study@colorado.eduÌýfor study details.Ìý

  • Peripheral Clocks study:Ìý
  • Delayed Sleep-Wake Phase Disorder study:Ìý
  • Morning Light study:

Biomarkers for Peripheral Circadian Clocks in Humans

The purpose ofÌýthis study is to examine how light exposure and meal timing influences circadian rhythms in healthy people. The study is 7 weeks long with 8 in-person visits at the University of Colorado-Boulder.

You may be eligible for this study if you are:

  • Healthy/no medical or sleep problems
  • Age 17-40

Study activities include

  • Health screening
  • Monitor on two separate occasions your sleep for 2 weeks and blood sugar levels for 3 days at home
  • Live in the sleep laboratory on two separate occasions for 7.7 days (15.4 days total):Blood and saliva sampling
    • Reaction time and ability to think testing
    • Bright light exposure and earlier meal timing

Compensation is up to $4,093

Please click on the link below to read the details of the study and to access the online screening survey:

Pathophysiology of Circadian Rhythm Delayed Sleep Wake Phase Disorder (DSWPD) Study

The purpose of this study is to improve our understanding of mechanisms of delayed sleep-wake phase disorder (DSWPD). ÌýWe are testing patients with DSWPD as well as healthy people without DSWPD. ÌýThe studyÌýis 6.5 weeks long with 6 in-person visitsÌýat the ¾«Æ·SMÔÚÏßӰƬ.

You may be eligible for this study if you:

  • Have a diagnosis of delayed-sleep wake phase disorder OR have late bedtimes after 1AM, and an inability to fall asleep and difficulty awakening when required for school/work

OR

  • Are healthy with typical bedtimes and no sleep concerns
  • Are aged 16-30

Study activities include:

  • Health screening
  • Monitor on separate occasions your sleep, mood, eating times for 1 or 2 weeks and blood sugar levels while living at home
  • Live in the sleep laboratory on two separate occasions for 51-66 hours (~4.87 days in total):Blood and saliva sampling
    • Reaction time, mood, and ability to think testing

Compensation is up to $1,725

Please click on the link below to read the details of the study and to access the online screening survey:

At Home Circadian Rhythm Assessment - Morning Light Study

This research studyÌýis to examine circadian rhythms in the home environment under typical home lighting conditions versus under candlelight conditions and natural sunlight in the morning.

You may be eligible for this study if you:

  • Are aged 18-65

This study entails two short visits at the Sleep and Chronobiology Lab at the ¾«Æ·SMÔÚÏßӰƬ and 7 days of at-home monitoring with 3 days of morning saliva sample collection.ÌýDuring the study you will be asked to stop all non-proscribed drug use (including nicotine, caffeine, alcohol, pain relievers (aspirin, ibuprofen [e.g., Advil], acetaminophen [e.g., Tylenol]), non-approved over the counter drugs, supplements, and recreational drugs including marijuana)Ìýas these will interfere with the study measures making the data unusable.

The study consists of an approximate 1-week at-home collection period consisting of wearing a watch-like device on your wrist and a pendant around your neck to record your sleep/light exposure/skin temperature. On three of the days, you will also be asked to wear a miniature thigh-worn device to record your physical activity. On days 5-7 of the study you will be asked to collect hourly saliva samples for three hours after your typical wake time under three separate lighting conditions (normal indoor lighting, dim indoor lighting, outdoor lighting).

Please click on the link below to read the study details and to access the online screening survey:

https://redcap.link/i2sjw3js

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