Cognitive training at home for clinically defined insomnia: effects on sleep and psychological functioning

Area of Science:

• Cognitive Neuroscience
• Sleep Medicine
• Behavioral Psychology

Background:

• Insomnia is a prevalent global health issue.
• Dysfunctional cognitive-emotional processes often maintain insomnia.
• Home-based interventions are needed for accessible insomnia management.

Purpose of the Study:

• To assess the feasibility of a home-based computerized cognitive training (CCT) program.
• To examine the association between CCT participation and changes in sleep and related outcomes.
• To explore potential gender-related differences in treatment response.

Main Methods:

• A four-week, open-label, feasibility study involving 32 adults with persistent sleep difficulties.
• Participants completed 20 self-guided CCT sessions via the CogniFit platform, targeting attention, memory, and executive functions.
• Sleep quality, mood, cognition, and quality of life were assessed using self-report questionnaires and a cognitive battery before and after the intervention.

Main Results:

• Statistically significant reductions in insomnia severity, sleep complaints, depressive symptoms, and worry were observed post-intervention.
• Improvements in executive functioning and global cognitive performance were noted.
• No significant changes in self-reported quality of life were found; exploratory analyses suggested gender differences in mood and executive function.

Conclusions:

• Home-based CCT participation was associated with improvements in sleep, emotional, and cognitive measures in adults with persistent sleep difficulties.
• Findings are preliminary due to the feasibility design and small sample size, precluding efficacy conclusions.
• Larger randomized controlled trials are necessary to confirm benefits and determine CCT's role in multimodal insomnia treatment.