Document Detail


Parallels in stimulus-driven oscillatory brain responses to numerosity changes in adults and seven-month-old infants.
MedLine Citation:
PMID:  21761991     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Previous studies provide indirect evidence for an ontogenetically continuous Approximate-Number System. We employed a rapid steady-state visual-presentation paradigm combined with electroencephalography to measure stimulus-driven neural oscillatory responses to numerosities in infants and adults. Steady-state repetition of the same numerosity across a 2.4-sec time block yielded an increase in the stimulus-locked neural entrainment in both groups. Entrainment changes following a numerosity switch varied by the ratio of the numerosities, consistent with Weber's Law. These similarities thus provide direct evidence for an ontogenetically continuous Approximate-Number System. Moreover, the degree of neural entrainment significantly predicted infants' number discrimination measured behaviorally two months later.
Authors:
Melissa E Libertus; Elizabeth M Brannon; Marty G Woldorff
Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Developmental neuropsychology     Volume:  36     ISSN:  1532-6942     ISO Abbreviation:  Dev Neuropsychol     Publication Date:  2011  
Date Detail:
Created Date:  2011-07-18     Completed Date:  2011-11-29     Revised Date:  2013-06-28    
Medline Journal Info:
Nlm Unique ID:  8702038     Medline TA:  Dev Neuropsychol     Country:  England    
Other Details:
Languages:  eng     Pagination:  651-67     Citation Subset:  IM    
Affiliation:
Department of Psychological and Brain Sciences, Johns Hopkins University, Baltimore, Maryland 21218, USA. melissa.libertus@jhu.edu
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MeSH Terms
Descriptor/Qualifier:
Adult
Biological Markers
Brain / physiology*
Brain Mapping
Electroencephalography
Female
Functional Neuroimaging / psychology
Humans
Infant
Linear Models
Male
Mathematical Concepts*
Visual Perception / physiology
Grant Support
ID/Acronym/Agency:
R01 HD059108/HD/NICHD NIH HHS; R01-MH066154/MH/NIMH NIH HHS; R01-MH60415/MH/NIMH NIH HHS
Chemical
Reg. No./Substance:
0/Biological Markers
Comments/Corrections

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