Document Detail


Responsiveness to terrestrial optic flow in infancy: does locomotor experience play a role?
MedLine Citation:
PMID:  16442177     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Human infants show a peak in postural compensation to optic flow at approximately nine months of age. The current experiment tested whether the magnitude of visual-postural coupling in 9-month-olds increases when terrestrial optic flow is added to a moving room. A secondary objective was to explore whether locomotor experience plays any role in enhancing responsiveness to the additional terrestrial information. Ninety-one infants (experienced creepers, nascent creepers, and prelocomotors) were exposed to two conditions of optic flow: global optic flow (G) and global optic flow minus terrestrial optic flow (G-T). The additional terrestrial optic flow led to significantly higher visual-postural coupling. Consistent with previous findings, locomotor experience had no effect on responsiveness to the G-T condition, though there was weak evidence that the nascent creepers were more strongly influenced by the difference between flow conditions than the other infants. Unexpectedly, the prelocomotor females showed significantly lower visual-postural coupling than the prelocomotor males. These findings support the notion that the ground provides an important source of information for the control of posture and locomotion. The findings also suggest that locomotor experience most likely helps to functionalize smaller (partial), rather than larger (global), optic flow fields for postural control.
Authors:
Laure Lejeune; David I Anderson; Joseph J Campos; David C Witherington; Ichiro Uchiyama; Marianne Barbu-Roth
Related Documents :
6891097 - Panretinal photocoagulation and retinal oxygenation.
6425847 - Ocular manifestation of polychlorinated biphenyls intoxication.
11316707 - Factors affecting pulsatile ocular blood flow in normal subjects.
10385127 - Dorzolamide, visual function and ocular hemodynamics in normal-tension glaucoma.
9618847 - Sonographic diagnosis of fetal coarctation of the aorta at 14-16 weeks of gestation.
12094477 - Reticulocyte analysis by flow cytometry and other techniques.
Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2006-01-25
Journal Detail:
Title:  Human movement science     Volume:  25     ISSN:  0167-9457     ISO Abbreviation:  Hum Mov Sci     Publication Date:  2006 Feb 
Date Detail:
Created Date:  2006-02-13     Completed Date:  2006-06-28     Revised Date:  2008-11-21    
Medline Journal Info:
Nlm Unique ID:  8300127     Medline TA:  Hum Mov Sci     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  4-17     Citation Subset:  IM    
Affiliation:
Institute of Human Development, University of California, Berkeley, Tolman Hall, Berkeley, 94720-1690, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Female
Humans
Infant
Locomotion / physiology*
Male
Posture
Psychomotor Performance / physiology*
Sensation / physiology*
Vision, Ocular / physiology
Grant Support
ID/Acronym/Agency:
HD-36795/HD/NICHD NIH HHS; HD-39925/HD/NICHD NIH HHS; P20 MD00262/MD/NCMHD NIH HHS

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


Previous Document:  The influence of developmental coordination disorder and attention deficits on associated movements ...
Next Document:  Lipopolysaccharides-activated human astroglioma cells induce apoptotic death of T-lymphocytes via c-...