Habitual night waking associates with dynamics of waking cortical theta power in infancy.
Dev Psychobiol
; 64(8): e22344, 2022 12.
Article
in En
| MEDLINE
| ID: mdl-36426793
ABSTRACT
The implications of the substantial individual differences in infant sleep for early brain development remain unclear. Here, we examined whether night sleep quality relates to daytime brain activity, operationalized through measures of EEG theta power and its dynamic modulation, which have been previously linked to later cognitive development. For this longitudinal study, 76 typically developing infants were studied (age 4-14 months, 166 individual study visits) over the course of 6 months with one, two, three, or four lab visits. Habitual sleep was measured with a 7-day sleep diary and actigraphy, and the Brief Infant Sleep Questionnaire. Twenty-channel EEG was recorded while infants watched multiple rounds of videos of women singing nursery rhymes; oscillatory power in the theta band was extracted. Key metrics were average theta across stimuli and the slope of change in theta within the first novel movie. Both objective and subjective sleep assessment methods showed a relationship between more night waking and higher overall theta power and reduced dynamic modulation of theta over the course of the novel video stimuli. These results may indicate altered learning and consolidation in infants with more disrupted night sleep, which may have implications for cognitive development.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Sleep
/
Actigraphy
Type of study:
Observational_studies
/
Risk_factors_studies
Limits:
Female
/
Humans
/
Infant
Language:
En
Journal:
Dev Psychobiol
Year:
2022
Document type:
Article
Affiliation country:
United kingdom