| The emergence of the sleep-wake cycle in infancy. | |
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MedLine Citation:
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PMID: 3759407 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In order to investigate the appearance of a rest-activity periodicity, spontaneous motor behavior of five low-risk preterm infants (gestational age range 27-31 weeks) was monitored for 24 hours at weekly intervals until term. Using a time lapse videorecorder (6.5 fields/sec.) both slow and rapid movements were counted every three minutes; this interval was adopted as basic chronological paradigm in order to evaluate the daily distribution of motor activity. The results of quantitative analysis showed a developmental trend of motor behavior which increased from earliest conceptional ages (C.A.) until 32-33 weeks, and decreased around 36-37 weeks C.A. Prolonged complete rest intervals are rare at low C.A., while in older infants (approx. 40 weeks C.A.) an initial tendency to organize motor activity in ultradian cycle-like periods seems to be more evident, contemporary with consolidated behavioral states. |
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Authors:
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C Faienza; C Capone; M C Galgano; E Sani |
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Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Italian journal of neurological sciences Volume: Suppl 5 ISSN: 0392-0461 ISO Abbreviation: Ital J Neurol Sci Publication Date: 1986 Apr |
Date Detail:
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Created Date: 1986-11-03 Completed Date: 1986-11-03 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 8006502 Medline TA: Ital J Neurol Sci Country: ITALY |
Other Details:
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Languages: eng Pagination: 37-42 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Activity Cycles Animals Brain / growth & development Cats Child Development* Electroencephalography Fetus / physiology Humans Infant Infant, Newborn / physiology* Infant, Premature Periodicity Sleep / physiology* Sleep Stages / physiology |
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