Abstract
Different aspects of early sleep organization have been associated with subsequent development in premature infants. The aim of the present study was to assess the relations between rapid eye movement (REM) activity in premature neonates and infants' developmental outcomes at 6 months. Participants were 81 premature infants (47 males). Sleep-wake states and REM were observed across 4 consecutive evening hours (7-11PM) in 10-s frames when infants were between 32 and 36 weeks post-menstrual age. Developmental outcome was assessed at 6 months with the mental development index (MDI) of the Bayley II. Infants with low-REM activity spent more time in less growth-promoting states, including crying and unfocused alert states in the neonatal period and had lower MDI scores at 6 months corrected age compared to infants with high-REM. Differences between the high- and low-REM groups were independent of neonatal medical risk. Low-REM activity may serve as an indicator of developmental risk among premature neonates.
Original language | English |
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Pages (from-to) | 27-32 |
Number of pages | 6 |
Journal | Infant Behavior and Development |
Volume | 32 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2009 |
Bibliographical note
Funding Information:This study was supported by the March of Dimes Foundation (#12-FY04-50) and the Irving B. Harris Foundation.
Funding
This study was supported by the March of Dimes Foundation (#12-FY04-50) and the Irving B. Harris Foundation.
Funders | Funder number |
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Irving B. Harris Foundation | |
March of Dimes Foundation | 12-FY04-50 |
Keywords
- Cognitive development
- Premature infants
- REM
- Sleep
- State