Treating insomnia symptoms using the THIM sleep tracking device.

The intervention in this clinical trial is THIM-administered Intensive Sleep Retraining. This behavioural treatment protocol requires the patient to fall asleep and be woken up shortly after sleep onset on multiple occasions over the course of one four-hour treatment session. This treatment will occur in the patient's home environment beginning around their typical bedtime. THIM is a small, light-weight device worn on the index finger of the dominant hand like a ring. It is calibrated using an accompanying smartphone application via Bluetooth, which is also used to retrieve the data. THIM will administer Intensive Sleep Retraining by detecting when the patient has fallen asleep and promptly waking them up with a high intensity alarm vibration. Participants will be instructed to wake up at their typical wake up time following the Intensive Sleep Retraining session. Sleep hygiene instructions will also be provided in paper form by the principle researcher, including typical instructions about maintaining a consistent sleep schedule, limiting caffeine intake in the afternoon, and creating a relaxing bedroom environment. Adherence will be monitored via THIM data linkage, participant sleep diary, and data from a watch-like actigraphy device (measures movement to estimate sleep and wakefulness) to be worn on the wrist throughout data collection. On the intervention night, both the intervention and control group will undergo ambulatory polysomnography (PSG) recording to objectively measure physiological changes associated with sleep (brain waves, etc.). This will provide an additional measure of treatment adherence. Participants will be set up with a portable PSG device by sleep technicians in the sleep laboratory, but participants will be able to return home to undergo either THIM-administered Intensive Sleep Retraining or the control treatment.