Document Detail


Flexibility in infant actions during arm- and leg-based learning in a mobile paradigm.
MedLine Citation:
PMID:  19081637     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
To understand young infants' flexible changes of learned actions when abrupt environmental changes occur, we examined fifty-four 3-month-olds who performed a mobile task, in which they learned to move the mobile by a string attached to their arms or legs (arm-based or leg-based learning). We manipulated the order of tests-arm to leg (AL) and leg to arm (LA)-and observed the time course of motion of four limbs. The infants in the AL condition showed a differentiated movement pattern, in which the movement of the connected arm was dominant, and when the connected limb changed, they immediately inhibited the prior movement pattern. The infants in the LA condition produced undifferentiated movement pattern of multiple limbs, which was maintained even when the critical limb was changed. The results suggest that the infants' flexibility of actions in a novel situation depends on the prior experience. We speculate neural mechanisms, which may underlie the difference between the arm-based and leg-based learning.
Authors:
Hama Watanabe; Gentaro Taga
Related Documents :
17292787 - Spontaneous smile and spontaneous laugh: an intensive longitudinal case study.
2383967 - The infant's theory of self-propelled objects.
19411147 - Frontal brain activation in premature infants' response to auditory stimuli in neonatal...
8436037 - Understanding category members as "the same sort of thing": explicit categorization in ...
6777877 - Progressive hepatic injury in prolonged parenteral alimentation.
1391157 - The national cot death prevention program in new zealand.
Publication Detail:
Type:  Journal Article     Date:  2008-12-10
Journal Detail:
Title:  Infant behavior & development     Volume:  32     ISSN:  1934-8800     ISO Abbreviation:  Infant Behav Dev     Publication Date:  2009 Jan 
Date Detail:
Created Date:  2009-01-19     Completed Date:  2009-06-04     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7806016     Medline TA:  Infant Behav Dev     Country:  United States    
Other Details:
Languages:  eng     Pagination:  79-90     Citation Subset:  IM    
Affiliation:
Japan Science and Technology Agency, CREST, Japan. hama@p.u-tokyo.ac.jp
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Analysis of Variance
Arm*
Biomechanics
Female
Humans
Infant
Learning / physiology*
Leg*
Male
Movement / physiology*
Pliability / physiology*
Psychomotor Performance / physiology*

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


Previous Document:  Affective and physiological factors predicting maternal response to infant crying.
Next Document:  Randomized comparison of ultra-brief bifrontal and unilateral electroconvulsive therapy for major de...