Publications by authors named "Chowon Park"
Background: Cognitive behavioral therapy for insomnia (CBTi) is the first-line therapy for chronic insomnia. Mobile app-based CBTi (MCBTi) can enhance the accessibility of CBTi treatment; however, few studies have evaluated the effectiveness of MCBTi using a multicenter, randomized controlled trial design.
Objective: We aimed to assess the efficacy of Somzz, an MCBTi that provides real-time and tailored feedback to users, through comparison with an active comparator app.
The goal was to create a brief temperament inventory grounded in the Regulative Theory of Temperament (FCB-TMI-CC, with a user-friendly, online applicability for studies in different cultures. As the regulative role of temperament is strongly revealed under meaningful stress, the study was planned within the time of the COVID-19 pandemic. To ensure high diversity in terms of culture, economic and environmental conditions, data from nine countries (Poland, United States of America, Italy, Japan, Argentina, South Korea, Ireland, United Kingdom and Kazakhstan) were utilized (min.
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- The study examined how chronic insomnia disorder (CID) affects brain connectivity and hyperarousal indicators compared to good sleepers (GS).
- Fifty CID patients and 52 GS participants underwent questionnaires, polysomnography, and resting-state functional MRI to analyze brain activity and hyperarousal biomarkers.
- Results showed that CID patients had altered functional connectivity in specific brain regions and demonstrated a correlation between reduced connectivity and higher EEG beta power, suggesting a link between daytime hyperarousal and sleep disturbances.