Document Detail

Behavioral states of premature infants: implications for neural and behavioral development.
MedLine Citation:
PMID:  3556782     Owner:  NLM     Status:  MEDLINE    
Nine premature and 28 full-term infants were observed in their homes for 7 hr when they were 2, 3, 4, and 5 weeks post-term, and the sleeping and waking states displayed by these infants were compared. For these comparisons, the observation day was divided into two mutually exclusive contexts: times when the baby was alone and times when the baby was with the mother. The premature infants spent more time alone (mean of 5.4 hr a day) than the full-terms (4.6 hr). Over the total 7-hr day, the premature infants spent more time in alert, nonalert waking activity, and sleep-wake transition than the full-terms, and they spent less time in drowse and total sleep. These results clearly indicate that, at the same post-term ages, the sleep-wake states of premature infants differ markedly from those of full-terms. Four states showed significant Group X Context interactions indicating that state differences between premature and full-term infants were also a function of the context in which the infants were observed. For example, the prematures exhibited more fuss or cry and more drowse when alone; whereas the full-terms exhibited more of these states when with their mothers. This finding of context-related differences between prematures and full-terms has implications for the conflicting reports in the literature, as heretofore the states of prematures and full-terms have been compared from observations made in a single situation. The results indicate that prematures exhibit significant commonality in their neurobehavioral development through the early post-term period despite heterogeneity among them in their exposure to prenatal, perinatal, and early postnatal stresses.
D H Davis; E B Thoman
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Developmental psychobiology     Volume:  20     ISSN:  0012-1630     ISO Abbreviation:  Dev Psychobiol     Publication Date:  1987 Jan 
Date Detail:
Created Date:  1987-05-05     Completed Date:  1987-05-05     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  0164074     Medline TA:  Dev Psychobiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  25-38     Citation Subset:  IM    
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MeSH Terms
Arousal / physiology
Birth Order
Child Behavior*
Child Development*
Gestational Age
Infant, Newborn
Infant, Premature / physiology*
Mother-Child Relations
Nervous System Physiological Phenomena*
Sleep Stages / physiology
Social Environment
Wakefulness / physiology
Grant Support
MCJ-090480//PHS HHS

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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