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The Effects of Insomnia Treatment on Overnight Regulation of Emotional Memories and Risk for Mental Disorders
Sponsor: Woolcock Institute of Medical Research
Summary
This project aims to elucidate whether CBCTi changes symptom severity or even remission of anxiety disorders as compared with a delayed-start control group. The investigators will use a delayed-start randomized controlled trial in a cohort of individuals with anxiety and insomnia (N=98) to compare the effects of an online therapist-guided cognitive behavioural and circadian therapy for insomnia versus control on overnight emotion regulation and mental health outcomes. The project will involve at-home assessments and in-lab visits. At-home assessment involves recording sleep and circadian rhythm measures with wearables and daily diaries. Participants will be invited to perform two sleep studies and neuroimaging sessions to investigate the effects of CBCTi on neuroimaging and psychophysiological markers of overnight regulation of emotional distress.
Official title: A Delayed-start Randomized Controlled Trial Comparing the Effects of Online Therapist-guided Cognitive Behavioural and Circadian Therapy for Insomnia Versus Control on Overnight Emotion Regulation and Mental Health Outcomes
Key Details
Gender
All
Age Range
18 Years - 45 Years
Study Type
INTERVENTIONAL
Enrollment
98
Start Date
2026-01-06
Completion Date
2030-06
Last Updated
2025-11-26
Healthy Volunteers
No
Conditions
Interventions
Immediate CBCTi
This intervention will be immediately accessible to the CBCTi group. The program is composed of weekly online modules that include written information and interactive components such as schematics, images, videos, and questions. The content of the modules follows traditional and validated cognitive-behavioural therapy for insomnia protocols including sleep education, behavioural strategies (e.g., stimulus control, bedtime retraining, sleep hygiene), cognitive restructuration approaches (e.g., thought reappraisal, imagery, mindfulness), and relaxation practices (progressive muscle relaxation and autogenic training). In addition, further content aims to stabilize and amplify circadian rhythmicity through light exposure in the morning, daytime moderate physical activity, and evening time warm baths. Participants complete daily sleep diaries throughout the intervention.
Delayed CBCTi
This intervention will be accessible after a waiting period of 2 months (i.e, delayed start). The program is composed of weekly online modules that include written information and interactive components such as schematics, images, videos, and questions. The content of the modules follows traditional and validated cognitive-behavioural therapy for insomnia protocols including sleep education, behavioural strategies (e.g., stimulus control, bedtime retraining, sleep hygiene), cognitive restructuration approaches (e.g., thought reappraisal, imagery, mindfulness), and relaxation practices (progressive muscle relaxation and autogenic training). In addition, further content aims to stabilize and amplify circadian rhythmicity through light exposure in the morning, daytime moderate physical activity, and evening time warm baths. Participants complete daily sleep diaries throughout the intervention.
Locations (1)
Woolcock Institute of Medical Research
Macquarie Park, New South Wales, Australia