| Tonic and phasic orientation in full-term and preterm infants. | |
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MedLine Citation:
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PMID: 2072084 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Thirty-three full-term infants and thirty-eight preterm infants (on average born at 30 weeks gestation) were tested for their latency to turn toward checkered stimulus patterns (phasic orienting or "attention-getting") and for the duration of their initial fixation (tonic orienting or "attention-holding"). Plotted against the logarithm of the subjects' postconceptional age, turning latency fell linearly between 36 and 120 weeks, while fixation time fell abruptly at 53 weeks. Preterm and full-term infants showed the same developmental trends, implying that both of these attentional behaviors are biologically timetabled and that neither is greatly affected by premature extrauterine experience. Unexpectedly, phasic orientation in the first 30 postnatal days was significantly faster in preterm than in full-term infants, and fixation times failed to differ. Despite the necessary functional integration of phasic and tonic orienting in mature visual scanning and attention, the present results suggest an independence in their early postnatal development and that neither is mature at birth. |
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Authors:
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N Foreman; A Fielder; D Price; V Bowler |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of experimental child psychology Volume: 51 ISSN: 0022-0965 ISO Abbreviation: J Exp Child Psychol Publication Date: 1991 Jun |
Date Detail:
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Created Date: 1991-08-22 Completed Date: 1991-08-22 Revised Date: 2009-09-29 |
Medline Journal Info:
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Nlm Unique ID: 2985128R Medline TA: J Exp Child Psychol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 407-22 Citation Subset: IM |
Affiliation:
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Department of Psychology, University of Leicester, UK. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Arousal Attention* Fixation, Ocular Gestational Age Humans Infant, Newborn Infant, Premature / psychology* Orientation* Pattern Recognition, Visual* Reaction Time |
| Grant Support | |
ID/Acronym/Agency:
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//Wellcome Trust |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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