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Home-Based Measurement of Circadian Timing in Veterans with Traumatic Brain Injury and Insomnia

Rocky Mountain MIRECC for Veteran Suicide Prevention
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Home-Based Measurement of Circadian Timing in Veterans with Traumatic Brain Injury and Insomnia

Home Circadian

Veterans often experience insomnia after a traumatic brain injury (TBI), which can delay recovery and reduce quality of life. For some, this insomnia may be caused by disruption of their circadian rhythm. Circadian rhythm is the internal daily clock that controls our body functions, such as sleep, hormone production, and metabolism. It tells the body when to be awake and when to sleep, and it helps regulate hunger and other bodily processes. When our circadian rhythm is disrupted, or when our body’s internal clock is not in sync with bed and wake times, it can lead to difficulty falling or staying asleep. Problems with circadian timing can be treated with existing therapies that target the circadian system. However, such problems often go undetected in clinical practice because it is challenging to measure circadian timing.


The goal of this study is to explore two new potential tools for measuring circadian timing in the home of Veterans with insomnia and a history of TBI. We are looking to learn more about Veteran’s experiences with each tool to determine if they will be convenient to use. These results will help us develop personalized treatments for insomnia following TBI.


This study will take place over a two-week period. There will be an initial in-person study visit at Rocky Mountain Regional VAMC. The rest of the study will take place remotely at home. Total participation will take between 7-15 hours over two weeks.


You may be eligible if you are a Veteran between ages 18 and 64, currently have insomnia, and had a traumatic brain injury in the past.


This research study [Colorado Multiple Institutional Review Board (COMIRB) #22-2160] is being conducted by Daniel Reis, PhD (Principal Investigator).


For more information or to participate, please contact Adrieann Armstrong at 720-607-5464.

Our Research Center

If you would like to find out more about the Rocky Mountain MIRECC (Mental Illness Research, Education, and Clinical Center) for Veteran Suicide Prevention, please visit our website.

Last Updated 3 April 2024