| Hemodynamic responses to visual stimuli in cortex of adults and 3- to 4-year-old children. | |
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MedLine Citation:
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PMID: 21295018 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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In this study we used near-infrared spectroscopy (NIRS) to measure relative changes in cortical hemodynamics from 19 adult and 19 preschool children (aged 3- to 4-years old), while they watched epochs of static and motion pictures extracted from T.V.-programs. The spatio-temporal characteristics of oxygenated and deoxygenated hemoglobin volumes (oxy- and deoxy-Hb) of both subject groups were described, and compared where appropriate, for five regions of interest (ROIs). These were striate, left and right middle temporal, and left and right temporo-parietal areas. Over these areas, deoxy-Hb volumes did not differ between both groups. Preschool data showed significant increases in oxy-Hb over striate, middle temporal and temporo-parietal areas in response to visual motion stimuli. Static stimuli caused a significant oxy-Hb increase over striate and left middle temporal areas. Surprisingly, changes in adult oxy-Hb were not profound and did not show a significant oxy-Hb increase in striate and middle temporal areas in response to the motion stimuli, warranting further research. In spite of oxy-Hb volume differences, oxy-Hb recovery to baseline followed a similar pattern in both groups in response to both static and motion stimuli. Together, the results suggest that near-infrared spectroscopy is a viable method to investigate cortical development of preschool children by monitoring their hemodynamic response patterns. |
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Authors:
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Gerard B Remijn; Mitsuru Kikuchi; Yuko Yoshimura; Kiyomi Shitamichi; Sanae Ueno; Kikuko Nagao; Toshio Munesue; Haruyuki Kojima; Yoshio Minabe |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-2-1 |
Journal Detail:
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Title: Brain research Volume: - ISSN: 1872-6240 ISO Abbreviation: - Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-2-7 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0045503 Medline TA: Brain Res Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2010. Published by Elsevier B.V. |
Affiliation:
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Department of Psychiatry and Neurobiology, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan; Kyushu University, International Education Center, Fukuoka, Japan. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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