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Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
Published on: October 2, 2019
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Normal sleep development in infants: findings from two large birth cohorts
E Juulia Paavonen1, Outi Saarenpää-Heikkilä2, Isabel Morales-Munoz3
1Paediatric Research Center, Child Psychiatry, the University of Helsinki and Helsinki University Hospital, Helsinki, Finland; Finnish Institute for Health and Welfare, Helsinki, Finland.
Sleep Medicine
|February 23, 2020
Summary
Infant sleep patterns are highly variable in the first two years, with sleep consolidation occurring later. These findings help identify normal sleep development versus actual disturbances in young children.
Area of Science:
- Pediatrics
- Developmental Psychology
- Sleep Medicine
Background:
- Sleep difficulties are common in young children.
- Parents often worry about normal sleep variations as disturbances.
- Establishing normative sleep data is crucial for accurate assessment.
Purpose of the Study:
- To describe normative sleep development in healthy children.
- To provide reference values for sleep at 3, 6, 8, 12, 18, and 24 months.
- To differentiate normative sleep from clinical disturbances.
Main Methods:
- Utilized two large birth cohorts (CHILD-SLEEP and Finnbrain).
- Included healthy, term-born infants.
- Assessed sleep duration and quality using the Brief Infant Sleep Questionnaire and Infant Sleep Questionnaire.
Main Results:
- Sleep quality showed high variability in the first year, decreasing by the second year.
- Sleep latency reduced by six months.
- Night-time sleep consolidation occurred during the second year, despite frequent parent-reported problems.
Conclusions:
- Reference values aid clinicians in identifying significant sleep deviations.
- Helps in determining infants who may benefit from sleep counseling or interventions.
- Supports parents by clarifying normal sleep development ranges.
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